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12012130020220 = 2251124963690091
BaseRepresentation
bin1010111011001100101010…
…1111100010101101111100
31120112100101222211222100121
42232303022233202231330
53033301320241121340
641314144002304324
72346563531332651
oct256631257425574
946470358758317
1012012130020220
113911352271600
1214200460580a4
1369197b779145
142d75669a3c28
1515c6e2cc594a
hexaeccabe2b7c

12012130020220 has 36 divisors (see below), whose sum is σ = 27727172853912. Its totient is φ = 4368047279200.

The previous prime is 12012130020199. The next prime is 12012130020227. The reversal of 12012130020220 is 2202003121021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12012130020194 and 12012130020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012130020227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2481842626 + ... + 2481847465.

It is an arithmetic number, because the mean of its divisors is an integer number (770199245942).

Almost surely, 212012130020220 is an apocalyptic number.

12012130020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012130020220 is an abundant number, since it is smaller than the sum of its proper divisors (15715042833692).

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

12012130020220 is a wasteful number, since it uses less digits than its factorization.

12012130020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963690122 (or 4963690109 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12012130020220 its reverse (2202003121021), we get a palindrome (14214133141241).

The spelling of 12012130020220 in words is "twelve trillion, twelve billion, one hundred thirty million, twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 121 220 242 484 605 1210 2420 4963690091 9927380182 19854760364 24818450455 49636900910 54600591001 99273801820 109201182002 218402364004 273002955005 546005910010 600606501011 1092011820020 1201213002022 2402426004044 3003032505055 6006065010110 12012130020220