21310011322 has 16 divisors (see below), whose sum is σ = 32115801600. Its totient is φ = 10604777040.

The previous prime is 21310011271. The next prime is 21310011329. The reversal of 21310011322 is 22311001312.

It is a junction number, because it is equal to n+sod(n) for n = 21310011296 and 21310011305.

It is not an unprimeable number, because it can be changed into a prime (21310011329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697047 + ... + 1709557.

It is an arithmetic number, because the mean of its divisors is an integer number (2007237600).

Almost surely, 2^21310011322 is an apocalyptic number.

21310011322 is a deficient number, since it is larger than the sum of its proper divisors (10805790278).

21310011322 is a wasteful number, since it uses less digits than its factorization.

21310011322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16461.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21310011322 its reverse (22311001312), we get a palindrome (43621012634).

It can be divided in two parts, 213100 and 11322, that added together give a palindrome (224422).

The spelling of 21310011322 in words is "twenty-one billion, three hundred ten million, eleven thousand, three hundred twenty-two".