122420515031 has 2 divisors, whose sum is σ = 122420515032. Its totient is φ = 122420515030.

The previous prime is 122420515027. The next prime is 122420515099. The reversal of 122420515031 is 130515024221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122420515031 - 2² = 122420515027 is a prime.

It is a super-2 number, since 2×122420515031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122420515631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61210257515 + 61210257516.

It is an arithmetic number, because the mean of its divisors is an integer number (61210257516).

Almost surely, 2^122420515031 is an apocalyptic number.

122420515031 is a deficient number, since it is larger than the sum of its proper divisors (1).

122420515031 is an equidigital number, since it uses as much as digits as its factorization.

122420515031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 122420515031 its reverse (130515024221), we get a palindrome (252935539252).

The spelling of 122420515031 in words is "one hundred twenty-two billion, four hundred twenty million, five hundred fifteen thousand, thirty-one".