121431321132 has 48 divisors (see below), whose sum is σ = 309136431744. Its totient is φ = 36792784000.

The previous prime is 121431321127. The next prime is 121431321161. The reversal of 121431321132 is 231123134121.

It is a super-2 number, since 2×121431321132² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092907 + ... + 1198877.

It is an arithmetic number, because the mean of its divisors is an integer number (6440342328).

Almost surely, 2^121431321132 is an apocalyptic number.

121431321132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121431321132 is an abundant number, since it is smaller than the sum of its proper divisors (187705110612).

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

121431321132 is a wasteful number, since it uses less digits than its factorization.

121431321132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114670 (or 114668 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 121431321132 its reverse (231123134121), we get a palindrome (352554455253).

The spelling of 121431321132 in words is "one hundred twenty-one billion, four hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty-two".