22331442321 has 12 divisors (see below), whose sum is σ = 32312439172. Its totient is φ = 14861822976.

The previous prime is 22331442313. The next prime is 22331442323. The reversal of 22331442321 is 12324413322.

22331442321 is a `hidden beast` number, since 2 + 2 + 331 + 4 + 4 + 2 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18704391696 + 3627050625 = 136764^2 + 60225^2 .

It is not a de Polignac number, because 22331442321 - 2³ = 22331442313 is a prime.

It is a super-2 number, since 2×22331442321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22331442323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2144956 + ... + 2155341.

Almost surely, 2^22331442321 is an apocalyptic number.

It is an amenable number.

22331442321 is a deficient number, since it is larger than the sum of its proper divisors (9980996851).

22331442321 is a wasteful number, since it uses less digits than its factorization.

22331442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300880 (or 4300877 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 22331442321 its reverse (12324413322), we get a palindrome (34655855643).

The spelling of 22331442321 in words is "twenty-two billion, three hundred thirty-one million, four hundred forty-two thousand, three hundred twenty-one".