21052513022 has 4 divisors (see below), whose sum is σ = 31578769536. Its totient is φ = 10526256510.

The previous prime is 21052513003. The next prime is 21052513039. The reversal of 21052513022 is 22031525012.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5263128254 + ... + 5263128257.

It is an arithmetic number, because the mean of its divisors is an integer number (7894692384).

Almost surely, 2^21052513022 is an apocalyptic number.

21052513022 is a deficient number, since it is larger than the sum of its proper divisors (10526256514).

21052513022 is a wasteful number, since it uses less digits than its factorization.

21052513022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526256513.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 21052513022 in words is "twenty-one billion, fifty-two million, five hundred thirteen thousand, twenty-two".