21597226230 has 32 divisors (see below), whose sum is σ = 52096470624. Its totient is φ = 5730023936.

The previous prime is 21597226193. The next prime is 21597226247. The reversal of 21597226230 is 3262279512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1821267 + ... + 1833086.

It is an arithmetic number, because the mean of its divisors is an integer number (1628014707).

Almost surely, 2^21597226230 is an apocalyptic number.

21597226230 is an abundant number, since it is smaller than the sum of its proper divisors (30499244394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21597226230 is a wasteful number, since it uses less digits than its factorization.

21597226230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654560.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 21597226230 in words is "twenty-one billion, five hundred ninety-seven million, two hundred twenty-six thousand, two hundred thirty".