121231233112 has 32 divisors (see below), whose sum is σ = 248121853200. Its totient is φ = 55072022400.

The previous prime is 121231233107. The next prime is 121231233157. The reversal of 121231233112 is 211332132121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 265839 + ... + 559582.

Almost surely, 2^121231233112 is an apocalyptic number.

It is an amenable number.

121231233112 is an abundant number, since it is smaller than the sum of its proper divisors (126890620088).

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

121231233112 is a wasteful number, since it uses less digits than its factorization.

121231233112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827107 (or 827103 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121231233112 its reverse (211332132121), we get a palindrome (332563365233).

The spelling of 121231233112 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty-three thousand, one hundred twelve".