22315520521 has 16 divisors (see below), whose sum is σ = 26063296128. Its totient is φ = 18709891200.

The previous prime is 22315520473. The next prime is 22315520537. The reversal of 22315520521 is 12502551322.

It is not a de Polignac number, because 22315520521 - 2²⁹ = 21778649609 is a prime.

It is a super-3 number, since 3×22315520521³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22315520521.

It is not an unprimeable number, because it can be changed into a prime (22315521521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31941 + ... + 213661.

It is an arithmetic number, because the mean of its divisors is an integer number (1628956008).

Almost surely, 2^22315520521 is an apocalyptic number.

It is an amenable number.

22315520521 is a deficient number, since it is larger than the sum of its proper divisors (3747775607).

22315520521 is a wasteful number, since it uses less digits than its factorization.

22315520521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182112.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 22315520521 in words is "twenty-two billion, three hundred fifteen million, five hundred twenty thousand, five hundred twenty-one".