121432315300 has 36 divisors (see below), whose sum is σ = 267219521856. Its totient is φ = 47888797600.

The previous prime is 121432315297. The next prime is 121432315343. The reversal of 121432315300 is 3513234121.

It is a happy number.

It is a super-2 number, since 2×121432315300² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8544472 + ... + 8558671.

It is an arithmetic number, because the mean of its divisors is an integer number (7422764496).

Almost surely, 2^121432315300 is an apocalyptic number.

121432315300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121432315300 is an abundant number, since it is smaller than the sum of its proper divisors (145787206556).

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

121432315300 is a wasteful number, since it uses less digits than its factorization.

121432315300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17103228 (or 17103221 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 121432315300 its reverse (3513234121), we get a palindrome (124945549421).

The spelling of 121432315300 in words is "one hundred twenty-one billion, four hundred thirty-two million, three hundred fifteen thousand, three hundred".