121137131 has 2 divisors, whose sum is σ = 121137132. Its totient is φ = 121137130.

The previous prime is 121137127. The next prime is 121137143. The reversal of 121137131 is 131731121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121137131 - 2² = 121137127 is a prime.

It is a super-2 number, since 2×121137131² = 29348409013822322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121136131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60568565 + 60568566.

It is an arithmetic number, because the mean of its divisors is an integer number (60568566).

Almost surely, 2^121137131 is an apocalyptic number.

121137131 is a deficient number, since it is larger than the sum of its proper divisors (1).

121137131 is an equidigital number, since it uses as much as digits as its factorization.

121137131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126, while the sum is 20.

The square root of 121137131 is about 11006.2314622218. The cubic root of 121137131 is about 494.7955227961.

Adding to 121137131 its reverse (131731121), we get a palindrome (252868252).

The spelling of 121137131 in words is "one hundred twenty-one million, one hundred thirty-seven thousand, one hundred thirty-one".