52121252424402 has 96 divisors (see below), whose sum is σ = 130403544860160. Its totient is φ = 14737153737600.

The previous prime is 52121252424389. The next prime is 52121252424487. The reversal of 52121252424402 is 20442425212125.

52121252424402 is a `hidden beast` number, since 5 + 2 + 1 + 2 + 1 + 2 + 5 + 242 + 4 + 402 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25128999 + ... + 27123957.

It is an arithmetic number, because the mean of its divisors is an integer number (1358370258960).

Almost surely, 2^{52121252424402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52121252424402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65201772430080).

52121252424402 is an abundant number, since it is smaller than the sum of its proper divisors (78282292435758).

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

52121252424402 is a wasteful number, since it uses less digits than its factorization.

52121252424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997128 (or 1997125 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 52121252424402 its reverse (20442425212125), we get a palindrome (72563677636527).

The spelling of 52121252424402 in words is "fifty-two trillion, one hundred twenty-one billion, two hundred fifty-two million, four hundred twenty-four thousand, four hundred two".