122210251 has 2 divisors, whose sum is σ = 122210252. Its totient is φ = 122210250.

The previous prime is 122210243. The next prime is 122210273. The reversal of 122210251 is 152012221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122210251 - 2³ = 122210243 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (122210651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61105125 + 61105126.

It is an arithmetic number, because the mean of its divisors is an integer number (61105126).

Almost surely, 2^122210251 is an apocalyptic number.

122210251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122210251 is an equidigital number, since it uses as much as digits as its factorization.

122210251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 122210251 is about 11054.8745356969. The cubic root of 122210251 is about 496.2523145567.

Adding to 122210251 its reverse (152012221), we get a palindrome (274222472).

The spelling of 122210251 in words is "one hundred twenty-two million, two hundred ten thousand, two hundred fifty-one".