121213231032 has 32 divisors (see below), whose sum is σ = 304103882880. Its totient is φ = 40261636320.

The previous prime is 121213230977. The next prime is 121213231039. The reversal of 121213231032 is 230132312121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121213231039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8916444 + ... + 8930027.

It is an arithmetic number, because the mean of its divisors is an integer number (9503246340).

Almost surely, 2^121213231032 is an apocalyptic number.

121213231032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121213231032 is an abundant number, since it is smaller than the sum of its proper divisors (182890651848).

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

121213231032 is a wasteful number, since it uses less digits than its factorization.

121213231032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17846763 (or 17846759 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121213231032 its reverse (230132312121), we get a palindrome (351345543153).

The spelling of 121213231032 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred thirty-one thousand, thirty-two".