22515021400052 has 24 divisors (see below), whose sum is σ = 39415142289600. Its totient is φ = 11253552670976.

The previous prime is 22515021400043. The next prime is 22515021400063. The reversal of 22515021400052 is 25000412051522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22515021399988 and 22515021400024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212447108 + ... + 212553060.

It is an arithmetic number, because the mean of its divisors is an integer number (1642297595400).

Almost surely, 2^{22515021400052} is an apocalyptic number.

It is an amenable number.

22515021400052 is a deficient number, since it is larger than the sum of its proper divisors (16900120889548).

22515021400052 is a wasteful number, since it uses less digits than its factorization.

22515021400052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124135 (or 124133 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 22515021400052 its reverse (25000412051522), we get a palindrome (47515433451574).

The spelling of 22515021400052 in words is "twenty-two trillion, five hundred fifteen billion, twenty-one million, four hundred thousand, fifty-two".