22502111252021 has 4 divisors (see below), whose sum is σ = 22626432308844. Its totient is φ = 22377790195200.

The previous prime is 22502111251999. The next prime is 22502111252051. The reversal of 22502111252021 is 12025211120522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6940774666225 + 15561336585796 = 2634535^2 + 3944786^2 .

It is a cyclic number.

It is not a de Polignac number, because 22502111252021 - 2¹⁸ = 22502110989877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22502111252051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62160528140 + ... + 62160528501.

It is an arithmetic number, because the mean of its divisors is an integer number (5656608077211).

Almost surely, 2^{22502111252021} is an apocalyptic number.

It is an amenable number.

22502111252021 is a deficient number, since it is larger than the sum of its proper divisors (124321056823).

22502111252021 is a wasteful number, since it uses less digits than its factorization.

22502111252021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124321056822.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 22502111252021 its reverse (12025211120522), we get a palindrome (34527322372543).

The spelling of 22502111252021 in words is "twenty-two trillion, five hundred two billion, one hundred eleven million, two hundred fifty-two thousand, twenty-one".