121210118016697 has 2 divisors, whose sum is σ = 121210118016698. Its totient is φ = 121210118016696.

The previous prime is 121210118016643. The next prime is 121210118016709. The reversal of 121210118016697 is 796610811012121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76776481803961 + 44433636212736 = 8762219^2 + 6665856^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210118016697 - 2³⁵ = 121175758278329 is a prime.

It is a super-2 number, since 2×121210118016697² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121210118016607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605059008348 + 60605059008349.

It is an arithmetic number, because the mean of its divisors is an integer number (60605059008349).

Almost surely, 2^{121210118016697} is an apocalyptic number.

It is an amenable number.

121210118016697 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210118016697 is an equidigital number, since it uses as much as digits as its factorization.

121210118016697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 46.

The spelling of 121210118016697 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eighteen million, sixteen thousand, six hundred ninety-seven".