21313100322 has 32 divisors (see below), whose sum is σ = 47392781760. Its totient is φ = 7099816320.

The previous prime is 21313100309. The next prime is 21313100327. The reversal of 21313100322 is 22300131312.

21313100322 is a `hidden beast` number, since 2 + 1 + 31 + 310 + 0 + 322 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21313100295 and 21313100304.

It is not an unprimeable number, because it can be changed into a prime (21313100327) 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, 40783 + ... + 210450.

It is an arithmetic number, because the mean of its divisors is an integer number (1481024430).

Almost surely, 2^21313100322 is an apocalyptic number.

21313100322 is an abundant number, since it is smaller than the sum of its proper divisors (26079681438).

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

21313100322 is a wasteful number, since it uses less digits than its factorization.

21313100322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252815 (or 252809 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21313100322 its reverse (22300131312), we get a palindrome (43613231634).

The spelling of 21313100322 in words is "twenty-one billion, three hundred thirteen million, one hundred thousand, three hundred twenty-two".