21313332221322 has 32 divisors (see below), whose sum is σ = 44870650643520. Its totient is φ = 6730454332800.

The previous prime is 21313332221273. The next prime is 21313332221327. The reversal of 21313332221322 is 22312223331312.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21313332221322.

It is not an unprimeable number, because it can be changed into a prime (21313332221327) 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, 10326072 + ... + 12216972.

It is an arithmetic number, because the mean of its divisors is an integer number (1402207832610).

Almost surely, 2^{21313332221322} is an apocalyptic number.

21313332221322 is an abundant number, since it is smaller than the sum of its proper divisors (23557318422198).

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

21313332221322 is a wasteful number, since it uses less digits than its factorization.

21313332221322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989798.

The product of its digits is 15552, while the sum is 30.

Adding to 21313332221322 its reverse (22312223331312), we get a palindrome (43625555552634).

The spelling of 21313332221322 in words is "twenty-one trillion, three hundred thirteen billion, three hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-two".