122252909 has 4 divisors (see below), whose sum is σ = 123145404. Its totient is φ = 121360416.

The previous prime is 122252891. The next prime is 122252953. The reversal of 122252909 is 909252221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68641225 + 53611684 = 8285^2 + 7322^2 .

It is a cyclic number.

It is not a de Polignac number, because 122252909 - 2⁸ = 122252653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122252959) 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, 446042 + ... + 446315.

It is an arithmetic number, because the mean of its divisors is an integer number (30786351).

Almost surely, 2^122252909 is an apocalyptic number.

It is an amenable number.

122252909 is a deficient number, since it is larger than the sum of its proper divisors (892495).

122252909 is an equidigital number, since it uses as much as digits as its factorization.

122252909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892494.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 122252909 is about 11056.8037424927. The cubic root of 122252909 is about 496.3100474896.

The spelling of 122252909 in words is "one hundred twenty-two million, two hundred fifty-two thousand, nine hundred nine".