121201011218977 has 2 divisors, whose sum is σ = 121201011218978. Its totient is φ = 121201011218976.

The previous prime is 121201011218971. The next prime is 121201011218993. The reversal of 121201011218977 is 779812110102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103708173405841 + 17492837813136 = 10183721^2 + 4182444^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201011218977 - 2⁷ = 121201011218849 is a prime.

It is not a weakly prime, because it can be changed into another prime (121201011218971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600505609488 + 60600505609489.

It is an arithmetic number, because the mean of its divisors is an integer number (60600505609489).

Almost surely, 2^{121201011218977} is an apocalyptic number.

It is an amenable number.

121201011218977 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201011218977 is an equidigital number, since it uses as much as digits as its factorization.

121201011218977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 43.

The spelling of 121201011218977 in words is "one hundred twenty-one trillion, two hundred one billion, eleven million, two hundred eighteen thousand, nine hundred seventy-seven".