122317561 has 8 divisors (see below), whose sum is σ = 124738560. Its totient is φ = 119908272.

The previous prime is 122317541. The next prime is 122317577. The reversal of 122317561 is 165713221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122317561 - 2⁵ = 122317529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122317501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19891 + ... + 25303.

It is an arithmetic number, because the mean of its divisors is an integer number (15592320).

Almost surely, 2^122317561 is an apocalyptic number.

It is an amenable number.

122317561 is a deficient number, since it is larger than the sum of its proper divisors (2420999).

122317561 is an equidigital number, since it uses as much as digits as its factorization.

122317561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855.

The product of its digits is 2520, while the sum is 28.

The square root of 122317561 is about 11059.7269857804. The cubic root of 122317561 is about 496.3975212976.

It can be divided in two parts, 1223175 and 61, that added together give a square (1223236 = 1106²).

The spelling of 122317561 in words is "one hundred twenty-two million, three hundred seventeen thousand, five hundred sixty-one".