22201220131 has 2 divisors, whose sum is σ = 22201220132. Its totient is φ = 22201220130.

The previous prime is 22201220123. The next prime is 22201220141. The reversal of 22201220131 is 13102210222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22201220131 - 2³ = 22201220123 is a prime.

It is a super-2 number, since 2×22201220131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22201220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100610065 + 11100610066.

It is an arithmetic number, because the mean of its divisors is an integer number (11100610066).

Almost surely, 2^22201220131 is an apocalyptic number.

22201220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201220131 is an equidigital number, since it uses as much as digits as its factorization.

22201220131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22201220131 its reverse (13102210222), we get a palindrome (35303430353).

Subtracting from 22201220131 its reverse (13102210222), we obtain a palindrome (9099009909).

The spelling of 22201220131 in words is "twenty-two billion, two hundred one million, two hundred twenty thousand, one hundred thirty-one".