122621315 has 4 divisors (see below), whose sum is σ = 147145584. Its totient is φ = 98097048.

The previous prime is 122621311. The next prime is 122621321. The reversal of 122621315 is 513126221.

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 122621315 - 2² = 122621311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122621311) 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, 12262127 + ... + 12262136.

It is an arithmetic number, because the mean of its divisors is an integer number (36786396).

Almost surely, 2^122621315 is an apocalyptic number.

122621315 is a deficient number, since it is larger than the sum of its proper divisors (24524269).

122621315 is an equidigital number, since it uses as much as digits as its factorization.

122621315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24524268.

The product of its digits is 720, while the sum is 23.

The square root of 122621315 is about 11073.4509074633. The cubic root of 122621315 is about 496.8080867397.

Adding to 122621315 its reverse (513126221), we get a palindrome (635747536).

The spelling of 122621315 in words is "one hundred twenty-two million, six hundred twenty-one thousand, three hundred fifteen".