122120137 has 2 divisors, whose sum is σ = 122120138. Its totient is φ = 122120136.

The previous prime is 122120123. The next prime is 122120143. The reversal of 122120137 is 731021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99281296 + 22838841 = 9964^2 + 4779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120137 is a prime.

It is not a weakly prime, because it can be changed into another prime (122120107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060068 + 61060069.

It is an arithmetic number, because the mean of its divisors is an integer number (61060069).

Almost surely, 2^122120137 is an apocalyptic number.

It is an amenable number.

122120137 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120137 is an equidigital number, since it uses as much as digits as its factorization.

122120137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 122120137 is about 11050.7980254821. The cubic root of 122120137 is about 496.1303109420.

Adding to 122120137 its reverse (731021221), we get a palindrome (853141358).

The spelling of 122120137 in words is "one hundred twenty-two million, one hundred twenty thousand, one hundred thirty-seven".