122642130251 has 2 divisors, whose sum is σ = 122642130252. Its totient is φ = 122642130250.

The previous prime is 122642130203. The next prime is 122642130283. The reversal of 122642130251 is 152031246221.

It is a strong prime.

It is an emirp because it is prime and its reverse (152031246221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122642130251 is a prime.

It is a super-2 number, since 2×122642130251² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122642130151) 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, 61321065125 + 61321065126.

It is an arithmetic number, because the mean of its divisors is an integer number (61321065126).

Almost surely, 2^122642130251 is an apocalyptic number.

122642130251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122642130251 is an equidigital number, since it uses as much as digits as its factorization.

122642130251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 122642130251 its reverse (152031246221), we get a palindrome (274673376472).

The spelling of 122642130251 in words is "one hundred twenty-two billion, six hundred forty-two million, one hundred thirty thousand, two hundred fifty-one".