12421002131 has 2 divisors, whose sum is σ = 12421002132. Its totient is φ = 12421002130.

The previous prime is 12421002089. The next prime is 12421002137. The reversal of 12421002131 is 13120012421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12421002131 - 2²² = 12416807827 is a prime.

It is a super-2 number, since 2×12421002131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12421002137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210501065 + 6210501066.

It is an arithmetic number, because the mean of its divisors is an integer number (6210501066).

Almost surely, 2^12421002131 is an apocalyptic number.

12421002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421002131 is an equidigital number, since it uses as much as digits as its factorization.

12421002131 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 12421002131 its reverse (13120012421), we get a palindrome (25541014552).

The spelling of 12421002131 in words is "twelve billion, four hundred twenty-one million, two thousand, one hundred thirty-one".