30564220921 has 8 divisors (see below), whose sum is σ = 32919151104. Its totient is φ = 28209838800.

The previous prime is 30564220847. The next prime is 30564220969. The reversal of 30564220921 is 12902246503.

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

It is not a de Polignac number, because 30564220921 - 2²⁷ = 30430003193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30564200921) 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, 17305 + ... + 247846.

It is an arithmetic number, because the mean of its divisors is an integer number (4114893888).

Almost surely, 2^30564220921 is an apocalyptic number.

It is an amenable number.

30564220921 is a deficient number, since it is larger than the sum of its proper divisors (2354930183).

30564220921 is a wasteful number, since it uses less digits than its factorization.

30564220921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274031.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 30564220921 in words is "thirty billion, five hundred sixty-four million, two hundred twenty thousand, nine hundred twenty-one".