21313222134 has 16 divisors (see below), whose sum is σ = 43105394160. Its totient is φ = 7024582400.

The previous prime is 21313222129. The next prime is 21313222153. The reversal of 21313222134 is 43122231312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19955667 + ... + 19956734.

It is an arithmetic number, because the mean of its divisors is an integer number (2694087135).

Almost surely, 2^21313222134 is an apocalyptic number.

21313222134 is an abundant number, since it is smaller than the sum of its proper divisors (21792172026).

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

21313222134 is a wasteful number, since it uses less digits than its factorization.

21313222134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39912495.

The product of its digits is 1728, while the sum is 24.

Adding to 21313222134 its reverse (43122231312), we get a palindrome (64435453446).

The spelling of 21313222134 in words is "twenty-one billion, three hundred thirteen million, two hundred twenty-two thousand, one hundred thirty-four".