22599498921 has 32 divisors (see below), whose sum is σ = 30854533248. Its totient is φ = 14710325760.

The previous prime is 22599498919. The next prime is 22599498983. The reversal of 22599498921 is 12989499522.

It is not a de Polignac number, because 22599498921 - 2¹ = 22599498919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22599498221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10554511 + ... + 10556651.

It is an arithmetic number, because the mean of its divisors is an integer number (964204164).

Almost surely, 2^22599498921 is an apocalyptic number.

It is an amenable number.

22599498921 is a deficient number, since it is larger than the sum of its proper divisors (8255034327).

22599498921 is a wasteful number, since it uses less digits than its factorization.

22599498921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681.

The product of its digits is 8398080, while the sum is 60.

The spelling of 22599498921 in words is "twenty-two billion, five hundred ninety-nine million, four hundred ninety-eight thousand, nine hundred twenty-one".