121694631727 has 2 divisors, whose sum is σ = 121694631728. Its totient is φ = 121694631726.

The previous prime is 121694631683. The next prime is 121694631739. The reversal of 121694631727 is 727136496121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121694631727 - 2²⁷ = 121560413999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121694631797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60847315863 + 60847315864.

It is an arithmetic number, because the mean of its divisors is an integer number (60847315864).

Almost surely, 2^121694631727 is an apocalyptic number.

121694631727 is a deficient number, since it is larger than the sum of its proper divisors (1).

121694631727 is an equidigital number, since it uses as much as digits as its factorization.

121694631727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The spelling of 121694631727 in words is "one hundred twenty-one billion, six hundred ninety-four million, six hundred thirty-one thousand, seven hundred twenty-seven".