122021011220197 has 2 divisors, whose sum is σ = 122021011220198. Its totient is φ = 122021011220196.

The previous prime is 122021011220191. The next prime is 122021011220219. The reversal of 122021011220197 is 791022110120221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118888514767201 + 3132496452996 = 10903601^2 + 1769886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122021011220197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122021011220191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010505610098 + 61010505610099.

It is an arithmetic number, because the mean of its divisors is an integer number (61010505610099).

Almost surely, 2^{122021011220197} is an apocalyptic number.

It is an amenable number.

122021011220197 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021011220197 is an equidigital number, since it uses as much as digits as its factorization.

122021011220197 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 122021011220197 in words is "one hundred twenty-two trillion, twenty-one billion, eleven million, two hundred twenty thousand, one hundred ninety-seven".