122255257 has 4 divisors (see below), whose sum is σ = 124327440. Its totient is φ = 120183076.

The previous prime is 122255249. The next prime is 122255261. The reversal of 122255257 is 752552221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122255257 - 2³ = 122255249 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122255267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036003 + ... + 1036120.

It is an arithmetic number, because the mean of its divisors is an integer number (31081860).

Almost surely, 2^122255257 is an apocalyptic number.

It is an amenable number.

122255257 is a deficient number, since it is larger than the sum of its proper divisors (2072183).

122255257 is an equidigital number, since it uses as much as digits as its factorization.

122255257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072182.

The product of its digits is 14000, while the sum is 31.

The square root of 122255257 is about 11056.9099209499. The cubic root of 122255257 is about 496.3132248605.

The spelling of 122255257 in words is "one hundred twenty-two million, two hundred fifty-five thousand, two hundred fifty-seven".