22100525231 has 2 divisors, whose sum is σ = 22100525232. Its totient is φ = 22100525230.

The previous prime is 22100525221. The next prime is 22100525243. The reversal of 22100525231 is 13252500122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100525231 is a prime.

It is a super-2 number, since 2×22100525231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22100525197 and 22100525206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100525221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050262615 + 11050262616.

It is an arithmetic number, because the mean of its divisors is an integer number (11050262616).

Almost surely, 2^22100525231 is an apocalyptic number.

22100525231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100525231 is an equidigital number, since it uses as much as digits as its factorization.

22100525231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 22100525231 in words is "twenty-two billion, one hundred million, five hundred twenty-five thousand, two hundred thirty-one".