22023121231 has 2 divisors, whose sum is σ = 22023121232. Its totient is φ = 22023121230.

The previous prime is 22023121213. The next prime is 22023121247. The reversal of 22023121231 is 13212132022.

Together with previous prime (22023121213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22023121231 - 2²¹ = 22021024079 is a prime.

It is a super-2 number, since 2×22023121231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22023121199 and 22023121208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22023121261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011560615 + 11011560616.

It is an arithmetic number, because the mean of its divisors is an integer number (11011560616).

Almost surely, 2^22023121231 is an apocalyptic number.

22023121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22023121231 is an equidigital number, since it uses as much as digits as its factorization.

22023121231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22023121231 its reverse (13212132022), we get a palindrome (35235253253).

The spelling of 22023121231 in words is "twenty-two billion, twenty-three million, one hundred twenty-one thousand, two hundred thirty-one".