122312305 has 4 divisors (see below), whose sum is σ = 146774772. Its totient is φ = 97849840.

The previous prime is 122312299. The next prime is 122312341. The reversal of 122312305 is 503213221.

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 82319329 + 39992976 = 9073^2 + 6324^2 .

It is not a de Polignac number, because 122312305 - 2⁵ = 122312273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12231226 + ... + 12231235.

It is an arithmetic number, because the mean of its divisors is an integer number (36693693).

Almost surely, 2^122312305 is an apocalyptic number.

It is an amenable number.

122312305 is a deficient number, since it is larger than the sum of its proper divisors (24462467).

122312305 is an equidigital number, since it uses as much as digits as its factorization.

122312305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24462466.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 122312305 is about 11059.4893643423. The cubic root of 122312305 is about 496.3904111092.

Adding to 122312305 its reverse (503213221), we get a palindrome (625525526).

The spelling of 122312305 in words is "one hundred twenty-two million, three hundred twelve thousand, three hundred five".