12220212131 has 2 divisors, whose sum is σ = 12220212132. Its totient is φ = 12220212130.

The previous prime is 12220212127. The next prime is 12220212139. The reversal of 12220212131 is 13121202221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12220212131 - 2² = 12220212127 is a prime.

It is a super-2 number, since 2×12220212131² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12220212139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110106065 + 6110106066.

It is an arithmetic number, because the mean of its divisors is an integer number (6110106066).

Almost surely, 2^12220212131 is an apocalyptic number.

12220212131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220212131 is an equidigital number, since it uses as much as digits as its factorization.

12220212131 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 17.

Adding to 12220212131 its reverse (13121202221), we get a palindrome (25341414352).

The spelling of 12220212131 in words is "twelve billion, two hundred twenty million, two hundred twelve thousand, one hundred thirty-one".