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12013210212020 = 225600660510601
BaseRepresentation
bin1010111011010000101100…
…1000001001011010110100
31120112110012021102101221022
42232310023020021122310
53033311023303241040
641314443110440312
72346632355656123
oct256641310113264
946473167371838
1012013210212020
113911856a876a6
1214202a7963098
13691ac14b2aa4
142d762a227aba
1515c757a476b5
hexaed0b2096b4

12013210212020 has 12 divisors (see below), whose sum is σ = 25227741445284. Its totient is φ = 4805284084800.

The previous prime is 12013210212007. The next prime is 12013210212121. The reversal of 12013210212020 is 2021201231021.

It can be written as a sum of positive squares in 2 ways, for example, as 6486404172964 + 5526806039056 = 2546842^2 + 2350916^2 .

It is a super-2 number, since 2×120132102120202 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12013210212020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300330255281 + ... + 300330255320.

It is an arithmetic number, because the mean of its divisors is an integer number (2102311787107).

Almost surely, 212013210212020 is an apocalyptic number.

12013210212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013210212020 is an abundant number, since it is smaller than the sum of its proper divisors (13214531233264).

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

12013210212020 is a wasteful number, since it uses less digits than its factorization.

12013210212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600660510610 (or 600660510608 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12013210212020 its reverse (2021201231021), we get a palindrome (14034411443041).

The spelling of 12013210212020 in words is "twelve trillion, thirteen billion, two hundred ten million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 600660510601 1201321021202 2402642042404 3003302553005 6006605106010 12013210212020