122251839 has 4 divisors (see below), whose sum is σ = 163002456. Its totient is φ = 81501224.

The previous prime is 122251819. The next prime is 122251891. The reversal of 122251839 is 938152221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122251839 - 2⁵ = 122251807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122251819) 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, 20375304 + ... + 20375309.

It is an arithmetic number, because the mean of its divisors is an integer number (40750614).

Almost surely, 2^122251839 is an apocalyptic number.

122251839 is a deficient number, since it is larger than the sum of its proper divisors (40750617).

122251839 is an equidigital number, since it uses as much as digits as its factorization.

122251839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40750616.

The product of its digits is 8640, while the sum is 33.

The square root of 122251839 is about 11056.7553558899. The cubic root of 122251839 is about 496.3085995259.

The spelling of 122251839 in words is "one hundred twenty-two million, two hundred fifty-one thousand, eight hundred thirty-nine".