12126131 has 2 divisors, whose sum is σ = 12126132. Its totient is φ = 12126130.

The previous prime is 12126109. The next prime is 12126139. The reversal of 12126131 is 13162121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12126131 is a prime.

It is a super-2 number, since 2×12126131² = 294086106058322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12126139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6063065 + 6063066.

It is an arithmetic number, because the mean of its divisors is an integer number (6063066).

Almost surely, 2^12126131 is an apocalyptic number.

12126131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12126131 is an equidigital number, since it uses as much as digits as its factorization.

12126131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 12126131 is about 3482.2594676445. The cubic root of 12126131 is about 229.7421874903.

Adding to 12126131 its reverse (13162121), we get a palindrome (25288252).

The spelling of 12126131 in words is "twelve million, one hundred twenty-six thousand, one hundred thirty-one".