22131323331 has 8 divisors (see below), whose sum is σ = 31778310480. Its totient is φ = 13619275872.

The previous prime is 22131323323. The next prime is 22131323369. The reversal of 22131323331 is 13332313122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22131323331 - 2³ = 22131323323 is a prime.

It is a super-2 number, since 2×22131323331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22131323321) 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, 283734876 + ... + 283734953.

It is an arithmetic number, because the mean of its divisors is an integer number (3972288810).

Almost surely, 2^22131323331 is an apocalyptic number.

22131323331 is a deficient number, since it is larger than the sum of its proper divisors (9646987149).

22131323331 is a wasteful number, since it uses less digits than its factorization.

22131323331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567469845.

The product of its digits is 1944, while the sum is 24.

Adding to 22131323331 its reverse (13332313122), we get a palindrome (35463636453).

The spelling of 22131323331 in words is "twenty-two billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred thirty-one".