22122231231 has 4 divisors (see below), whose sum is σ = 29496308312. Its totient is φ = 14748154152.

The previous prime is 22122231193. The next prime is 22122231247. The reversal of 22122231231 is 13213222122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22122231231 - 2⁹ = 22122230719 is a prime.

It is a super-2 number, since 2×22122231231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122231198 and 22122231207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122231251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3687038536 + ... + 3687038541.

It is an arithmetic number, because the mean of its divisors is an integer number (7374077078).

Almost surely, 2^22122231231 is an apocalyptic number.

22122231231 is a deficient number, since it is larger than the sum of its proper divisors (7374077081).

22122231231 is an equidigital number, since it uses as much as digits as its factorization.

22122231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374077080.

The product of its digits is 576, while the sum is 21.

Adding to 22122231231 its reverse (13213222122), we get a palindrome (35335453353).

The spelling of 22122231231 in words is "twenty-two billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred thirty-one".