122220120137 has 2 divisors, whose sum is σ = 122220120138. Its totient is φ = 122220120136.

The previous prime is 122220120107. The next prime is 122220120149. The reversal of 122220120137 is 731021022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112222320016 + 9997800121 = 334996^2 + 99989^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220120137 - 2¹² = 122220116041 is a prime.

It is not a weakly prime, because it can be changed into another prime (122220120107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110060068 + 61110060069.

It is an arithmetic number, because the mean of its divisors is an integer number (61110060069).

Almost surely, 2^122220120137 is an apocalyptic number.

It is an amenable number.

122220120137 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220120137 is an equidigital number, since it uses as much as digits as its factorization.

122220120137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 122220120137 its reverse (731021022221), we get a palindrome (853241142358).

The spelling of 122220120137 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred twenty thousand, one hundred thirty-seven".