122121110197 has 2 divisors, whose sum is σ = 122121110198. Its totient is φ = 122121110196.

The previous prime is 122121110161. The next prime is 122121110219. The reversal of 122121110197 is 791011121221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113083565841 + 9037544356 = 336279^2 + 95066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122121110197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122121110107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060555098 + 61060555099.

It is an arithmetic number, because the mean of its divisors is an integer number (61060555099).

Almost surely, 2^122121110197 is an apocalyptic number.

It is an amenable number.

122121110197 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121110197 is an equidigital number, since it uses as much as digits as its factorization.

122121110197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 122121110197 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred ten thousand, one hundred ninety-seven".