122422251 has 16 divisors (see below), whose sum is σ = 187976448. Its totient is φ = 69420000.

The previous prime is 122422249. The next prime is 122422273. The reversal of 122422251 is 152224221.

It is not a de Polignac number, because 122422251 - 2¹ = 122422249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (122422211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19500 + ... + 25001.

It is an arithmetic number, because the mean of its divisors is an integer number (11748528).

Almost surely, 2^122422251 is an apocalyptic number.

122422251 is a deficient number, since it is larger than the sum of its proper divisors (65554197).

122422251 is a wasteful number, since it uses less digits than its factorization.

122422251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44642.

The product of its digits is 640, while the sum is 21.

The square root of 122422251 is about 11064.4589113070. The cubic root of 122422251 is about 496.5391009611.

Adding to 122422251 its reverse (152224221), we get a palindrome (274646472).

The spelling of 122422251 in words is "one hundred twenty-two million, four hundred twenty-two thousand, two hundred fifty-one".