122100157 has 2 divisors, whose sum is σ = 122100158. Its totient is φ = 122100156.

The previous prime is 122100149. The next prime is 122100193. The reversal of 122100157 is 751001221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91030681 + 31069476 = 9541^2 + 5574^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100157 - 2³ = 122100149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122100107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050078 + 61050079.

It is an arithmetic number, because the mean of its divisors is an integer number (61050079).

Almost surely, 2^122100157 is an apocalyptic number.

It is an amenable number.

122100157 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100157 is an equidigital number, since it uses as much as digits as its factorization.

122100157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 122100157 is about 11049.8939813919. The cubic root of 122100157 is about 496.1032522753.

Adding to 122100157 its reverse (751001221), we get a palindrome (873101378).

The spelling of 122100157 in words is "one hundred twenty-two million, one hundred thousand, one hundred fifty-seven".