10121231112 has 32 divisors (see below), whose sum is σ = 26791495200. Its totient is φ = 3175288064.

The previous prime is 10121231089. The next prime is 10121231147. The reversal of 10121231112 is 21113212101.

It is a junction number, because it is equal to n+sod(n) for n = 10121231091 and 10121231100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12403062 + ... + 12403877.

It is an arithmetic number, because the mean of its divisors is an integer number (837234225).

Almost surely, 2^10121231112 is an apocalyptic number.

10121231112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10121231112 is an abundant number, since it is smaller than the sum of its proper divisors (16670264088).

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

10121231112 is a wasteful number, since it uses less digits than its factorization.

10121231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24806965 (or 24806961 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 10121231112 its reverse (21113212101), we get a palindrome (31234443213).

The spelling of 10121231112 in words is "ten billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred twelve".