122500051 has 2 divisors, whose sum is σ = 122500052. Its totient is φ = 122500050.

The previous prime is 122500043. The next prime is 122500067. The reversal of 122500051 is 150005221.

It is an a-pointer prime, because the next prime (122500067) can be obtained adding 122500051 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122500051 - 2³ = 122500043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122499998 and 122500034.

It is not a weakly prime, because it can be changed into another prime (122500951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61250025 + 61250026.

It is an arithmetic number, because the mean of its divisors is an integer number (61250026).

Almost surely, 2^122500051 is an apocalyptic number.

122500051 is a deficient number, since it is larger than the sum of its proper divisors (1).

122500051 is an equidigital number, since it uses as much as digits as its factorization.

122500051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 122500051 is about 11067.9741145342. The cubic root of 122500051 is about 496.6442631117.

Adding to 122500051 its reverse (150005221), we get a palindrome (272505272).

The spelling of 122500051 in words is "one hundred twenty-two million, five hundred thousand, fifty-one".