12220129631 has 2 divisors, whose sum is σ = 12220129632. Its totient is φ = 12220129630.

The previous prime is 12220129627. The next prime is 12220129637. The reversal of 12220129631 is 13692102221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12220129631 - 2² = 12220129627 is a prime.

It is a super-2 number, since 2×12220129631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12220129594 and 12220129603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220129637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110064815 + 6110064816.

It is an arithmetic number, because the mean of its divisors is an integer number (6110064816).

Almost surely, 2^12220129631 is an apocalyptic number.

12220129631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220129631 is an equidigital number, since it uses as much as digits as its factorization.

12220129631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 12220129631 in words is "twelve billion, two hundred twenty million, one hundred twenty-nine thousand, six hundred thirty-one".