22100131 has 2 divisors, whose sum is σ = 22100132. Its totient is φ = 22100130.

The previous prime is 22100129. The next prime is 22100147. The reversal of 22100131 is 13100122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22100131 - 2¹ = 22100129 is a prime.

It is a super-2 number, since 2×22100131² = 976831580434322, which contains 22 as substring.

Together with 22100129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22100191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050065 + 11050066.

It is an arithmetic number, because the mean of its divisors is an integer number (11050066).

Almost surely, 2^22100131 is an apocalyptic number.

22100131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100131 is an equidigital number, since it uses as much as digits as its factorization.

22100131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 22100131 is about 4701.0776424135. The cubic root of 22100131 is about 280.6283973213.

Adding to 22100131 its reverse (13100122), we get a palindrome (35200253).

Subtracting from 22100131 its reverse (13100122), we obtain a palindrome (9000009).

The spelling of 22100131 in words is "twenty-two million, one hundred thousand, one hundred thirty-one".