122909321 has 4 divisors (see below), whose sum is σ = 123234000. Its totient is φ = 122584644.

The previous prime is 122909287. The next prime is 122909333. The reversal of 122909321 is 123909221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123909221 = 10729 ⋅11549.

It is a cyclic number.

It is not a de Polignac number, because 122909321 - 2²² = 118715017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122999321) 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, 161771 + ... + 162528.

It is an arithmetic number, because the mean of its divisors is an integer number (30808500).

Almost surely, 2^122909321 is an apocalyptic number.

It is an amenable number.

122909321 is a deficient number, since it is larger than the sum of its proper divisors (324679).

122909321 is an equidigital number, since it uses as much as digits as its factorization.

122909321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324678.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 122909321 is about 11086.4476276218. The cubic root of 122909321 is about 497.1967408479.

The spelling of 122909321 in words is "one hundred twenty-two million, nine hundred nine thousand, three hundred twenty-one".