21131132322 has 16 divisors (see below), whose sum is σ = 42857508672. Its totient is φ = 6944503440.

The previous prime is 21131132287. The next prime is 21131132333. The reversal of 21131132322 is 22323113112.

It is a super-2 number, since 2×21131132322² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24801373 + ... + 24802224.

It is an arithmetic number, because the mean of its divisors is an integer number (2678594292).

Almost surely, 2^21131132322 is an apocalyptic number.

21131132322 is an abundant number, since it is smaller than the sum of its proper divisors (21726376350).

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

21131132322 is a wasteful number, since it uses less digits than its factorization.

21131132322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49603673.

The product of its digits is 432, while the sum is 21.

Adding to 21131132322 its reverse (22323113112), we get a palindrome (43454245434).

The spelling of 21131132322 in words is "twenty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred twenty-two".