121523244456 has 64 divisors (see below), whose sum is σ = 308426849280. Its totient is φ = 39892248000.

The previous prime is 121523244449. The next prime is 121523244461. The reversal of 121523244456 is 654442325121.

It is a super-2 number, since 2×121523244456² (a number of 23 digits) contains 22 as substring.

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, 7631655 + ... + 7647561.

It is an arithmetic number, because the mean of its divisors is an integer number (4819169520).

Almost surely, 2^121523244456 is an apocalyptic number.

It is an amenable number.

121523244456 is an abundant number, since it is smaller than the sum of its proper divisors (186903604824).

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

121523244456 is a wasteful number, since it uses less digits than its factorization.

121523244456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20734 (or 20730 counting only the distinct ones).

The product of its digits is 230400, while the sum is 39.

Adding to 121523244456 its reverse (654442325121), we get a palindrome (775965569577).

The spelling of 121523244456 in words is "one hundred twenty-one billion, five hundred twenty-three million, two hundred forty-four thousand, four hundred fifty-six".