21322013313 has 16 divisors (see below), whose sum is σ = 29949132800. Its totient is φ = 13455959760.

The previous prime is 21322013291. The next prime is 21322013327. The reversal of 21322013313 is 31331022312.

It is not a de Polignac number, because 21322013313 - 2⁸ = 21322013057 is a prime.

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 21322013313.

It is not an unprimeable number, because it can be changed into a prime (21322013213) 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, 73333 + ... + 219138.

It is an arithmetic number, because the mean of its divisors is an integer number (1871820800).

Almost surely, 2^21322013313 is an apocalyptic number.

It is an amenable number.

21322013313 is a deficient number, since it is larger than the sum of its proper divisors (8627119487).

21322013313 is a wasteful number, since it uses less digits than its factorization.

21322013313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293772.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21322013313 its reverse (31331022312), we get a palindrome (52653035625).

The spelling of 21322013313 in words is "twenty-one billion, three hundred twenty-two million, thirteen thousand, three hundred thirteen".