122567946251 has 2 divisors, whose sum is σ = 122567946252. Its totient is φ = 122567946250.

The previous prime is 122567946229. The next prime is 122567946301. The reversal of 122567946251 is 152649765221.

It is an a-pointer prime, because the next prime (122567946301) can be obtained adding 122567946251 to its sum of digits (50).

It is a weak prime.

It is an emirp because it is prime and its reverse (152649765221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122567946251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122567946251.

It is not a weakly prime, because it can be changed into another prime (122567946211) 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, 61283973125 + 61283973126.

It is an arithmetic number, because the mean of its divisors is an integer number (61283973126).

Almost surely, 2^122567946251 is an apocalyptic number.

122567946251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122567946251 is an equidigital number, since it uses as much as digits as its factorization.

122567946251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 50.

The spelling of 122567946251 in words is "one hundred twenty-two billion, five hundred sixty-seven million, nine hundred forty-six thousand, two hundred fifty-one".