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12012021012120 = 2335193518653757
BaseRepresentation
bin1010111011001100010000…
…1111101101011010011000
31120112100010101201210100120
42232303010033231122120
53033301104334341440
641314125110033240
72346561035642043
oct256630417553230
946470111653316
1012012021012120
1139112a6788168
121420015648820
136919620003cc
142d7556309c5a
1515c6d8441dd0
hexaecc43ed698

12012021012120 has 64 divisors (see below), whose sum is σ = 36222778458720. Its totient is φ = 3186608676864.

The previous prime is 12012021012071. The next prime is 12012021012133. The reversal of 12012021012120 is 2121012021021.

It is a super-2 number, since 2×120120210121202 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12012021012120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259303719 + ... + 259350038.

Almost surely, 212012021012120 is an apocalyptic number.

12012021012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012021012120 is an abundant number, since it is smaller than the sum of its proper divisors (24210757446600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12012021012120 is a wasteful number, since it uses less digits than its factorization.

12012021012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518653964 (or 518653960 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012021012120 its reverse (2121012021021), we get a palindrome (14133033033141).

The spelling of 12012021012120 in words is "twelve trillion, twelve billion, twenty-one million, twelve thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 193 386 579 772 965 1158 1544 1930 2316 2895 3860 4632 5790 7720 11580 23160 518653757 1037307514 1555961271 2074615028 2593268785 3111922542 4149230056 5186537570 6223845084 7779806355 10373075140 12447690168 15559612710 20746150280 31119225420 62238450840 100100175101 200200350202 300300525303 400400700404 500500875505 600601050606 800801400808 1001001751010 1201202101212 1501502626515 2002003502020 2402404202424 3003005253030 4004007004040 6006010506060 12012021012120