121012202021197 has 2 divisors, whose sum is σ = 121012202021198. Its totient is φ = 121012202021196.

The previous prime is 121012202021083. The next prime is 121012202021251. The reversal of 121012202021197 is 791120202210121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79256037487396 + 41756164533801 = 8902586^2 + 6461901^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012202021197 - 2⁷ = 121012202021069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012202028197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506101010598 + 60506101010599.

It is an arithmetic number, because the mean of its divisors is an integer number (60506101010599).

Almost surely, 2^{121012202021197} is an apocalyptic number.

It is an amenable number.

121012202021197 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012202021197 is an equidigital number, since it uses as much as digits as its factorization.

121012202021197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 121012202021197 in words is "one hundred twenty-one trillion, twelve billion, two hundred two million, twenty-one thousand, one hundred ninety-seven".