30504532221 has 24 divisors (see below), whose sum is σ = 45575065536. Its totient is φ = 19647696960.

The previous prime is 30504532213. The next prime is 30504532231. The reversal of 30504532221 is 12223540503.

It is a happy number.

It is not a de Polignac number, because 30504532221 - 2³ = 30504532213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30504532231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363295 + ... + 439308.

It is an arithmetic number, because the mean of its divisors is an integer number (1898961064).

Almost surely, 2^30504532221 is an apocalyptic number.

It is an amenable number.

30504532221 is a deficient number, since it is larger than the sum of its proper divisors (15070533315).

30504532221 is a wasteful number, since it uses less digits than its factorization.

30504532221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802753 (or 802750 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 30504532221 in words is "thirty billion, five hundred four million, five hundred thirty-two thousand, two hundred twenty-one".