121232031100 has 36 divisors (see below), whose sum is σ = 266999992504. Its totient is φ = 47769036480.

The previous prime is 121232031091. The next prime is 121232031101. The reversal of 121232031100 is 1130232121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232031101) 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, 9040467 + ... + 9053866.

Almost surely, 2^121232031100 is an apocalyptic number.

121232031100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121232031100 is an abundant number, since it is smaller than the sum of its proper divisors (145767961404).

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

121232031100 is a wasteful number, since it uses less digits than its factorization.

121232031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18094414 (or 18094407 counting only the distinct ones).

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

Adding to 121232031100 its reverse (1130232121), we get a palindrome (122362263221).

The spelling of 121232031100 in words is "one hundred twenty-one billion, two hundred thirty-two million, thirty-one thousand, one hundred".