122131220117 has 2 divisors, whose sum is σ = 122131220118. Its totient is φ = 122131220116.

The previous prime is 122131220083. The next prime is 122131220203. The reversal of 122131220117 is 711022131221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121744468561 + 386751556 = 348919^2 + 19666^2 .

It is an emirp because it is prime and its reverse (711022131221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122131220117 - 2²⁸ = 121862784661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122131220092 and 122131220101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122131270117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61065610058 + 61065610059.

It is an arithmetic number, because the mean of its divisors is an integer number (61065610059).

Almost surely, 2^122131220117 is an apocalyptic number.

It is an amenable number.

122131220117 is a deficient number, since it is larger than the sum of its proper divisors (1).

122131220117 is an equidigital number, since it uses as much as digits as its factorization.

122131220117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 122131220117 its reverse (711022131221), we get a palindrome (833153351338).

The spelling of 122131220117 in words is "one hundred twenty-two billion, one hundred thirty-one million, two hundred twenty thousand, one hundred seventeen".