21465601222 has 32 divisors (see below), whose sum is σ = 35302740480. Its totient is φ = 9728449920.

The previous prime is 21465601187. The next prime is 21465601237. The reversal of 21465601222 is 22210656412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961179 + ... + 983257.

It is an arithmetic number, because the mean of its divisors is an integer number (1103210640).

Almost surely, 2^21465601222 is an apocalyptic number.

21465601222 is a deficient number, since it is larger than the sum of its proper divisors (13837139258).

21465601222 is a wasteful number, since it uses less digits than its factorization.

21465601222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22768.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 21465601222 in words is "twenty-one billion, four hundred sixty-five million, six hundred one thousand, two hundred twenty-two".