121235212104 has 32 divisors (see below), whose sum is σ = 303504976320. Its totient is φ = 40356144576.

The previous prime is 121235212093. The next prime is 121235212123. The reversal of 121235212104 is 401212532121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3456739 + ... + 3491634.

It is an arithmetic number, because the mean of its divisors is an integer number (9484530510).

Almost surely, 2^121235212104 is an apocalyptic number.

It is an amenable number.

121235212104 is an abundant number, since it is smaller than the sum of its proper divisors (182269764216).

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

121235212104 is a wasteful number, since it uses less digits than its factorization.

121235212104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949109 (or 6949105 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 121235212104 its reverse (401212532121), we get a palindrome (522447744225).

The spelling of 121235212104 in words is "one hundred twenty-one billion, two hundred thirty-five million, two hundred twelve thousand, one hundred four".