122331621 has 8 divisors (see below), whose sum is σ = 163185984. Its totient is φ = 81515840.

The previous prime is 122331617. The next prime is 122331631. The reversal of 122331621 is 126133221.

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 122331621 - 2² = 122331617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122331631) 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, 1185 + ... + 15686.

It is an arithmetic number, because the mean of its divisors is an integer number (20398248).

Almost surely, 2^122331621 is an apocalyptic number.

It is an amenable number.

122331621 is a deficient number, since it is larger than the sum of its proper divisors (40854363).

122331621 is a wasteful number, since it uses less digits than its factorization.

122331621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19291.

The product of its digits is 432, while the sum is 21.

The square root of 122331621 is about 11060.3626070758. The cubic root of 122331621 is about 496.4165403213.

Adding to 122331621 its reverse (126133221), we get a palindrome (248464842).

The spelling of 122331621 in words is "one hundred twenty-two million, three hundred thirty-one thousand, six hundred twenty-one".