327239220921 has 4 divisors (see below), whose sum is σ = 436318961232. Its totient is φ = 218159480612.

The previous prime is 327239220863. The next prime is 327239220941. The reversal of 327239220921 is 129022932723.

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: 129022932723 = 3 ⋅43007644241.

It is a cyclic number.

It is not a de Polignac number, because 327239220921 - 2²² = 327235026617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (327239220941) 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, 54539870151 + ... + 54539870156.

It is an arithmetic number, because the mean of its divisors is an integer number (109079740308).

Almost surely, 2^327239220921 is an apocalyptic number.

It is an amenable number.

327239220921 is a deficient number, since it is larger than the sum of its proper divisors (109079740311).

327239220921 is a wasteful number, since it uses less digits than its factorization.

327239220921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109079740310.

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 327239220921 in words is "three hundred twenty-seven billion, two hundred thirty-nine million, two hundred twenty thousand, nine hundred twenty-one".