20120113231000 has 64 divisors (see below), whose sum is σ = 47082855924000. Its totient is φ = 8047739145600.

The previous prime is 20120113230961. The next prime is 20120113231151. The reversal of 20120113231000 is 13231102102.

It is a super-2 number, since 2×20120113231000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26889946 + ... + 27628054.

Almost surely, 2^{20120113231000} is an apocalyptic number.

20120113231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120113231000 is an abundant number, since it is smaller than the sum of its proper divisors (26962742693000).

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

20120113231000 is a wasteful number, since it uses less digits than its factorization.

20120113231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765389 (or 765375 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20120113231000 its reverse (13231102102), we get a palindrome (20133344333102).

The spelling of 20120113231000 in words is "twenty trillion, one hundred twenty billion, one hundred thirteen million, two hundred thirty-one thousand".