22111000111231 has 2 divisors, whose sum is σ = 22111000111232. Its totient is φ = 22111000111230.

The previous prime is 22111000111217. The next prime is 22111000111261. The reversal of 22111000111231 is 13211100011122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22111000111231 - 2²⁹ = 22110463240319 is a prime.

It is a super-2 number, since 2×22111000111231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111000111261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055500055615 + 11055500055616.

It is an arithmetic number, because the mean of its divisors is an integer number (11055500055616).

Almost surely, 2^{22111000111231} is an apocalyptic number.

22111000111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111000111231 is an equidigital number, since it uses as much as digits as its factorization.

22111000111231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 22111000111231 its reverse (13211100011122), we get a palindrome (35322100122353).

The spelling of 22111000111231 in words is "twenty-two trillion, one hundred eleven billion, one hundred eleven thousand, two hundred thirty-one".