30032203221 has 20 divisors (see below), whose sum is σ = 44966582892. Its totient is φ = 19975206528.

The previous prime is 30032203189. The next prime is 30032203231. The reversal of 30032203221 is 12230223003.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7566390225 + 22465812996 = 86985^2 + 149886^2 .

It is not a de Polignac number, because 30032203221 - 2⁵ = 30032203189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30032203194 and 30032203203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30032203231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 393066 + ... + 463211.

Almost surely, 2^30032203221 is an apocalyptic number.

It is an amenable number.

30032203221 is a deficient number, since it is larger than the sum of its proper divisors (14934379671).

30032203221 is an equidigital number, since it uses as much as digits as its factorization.

30032203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856722 (or 856713 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30032203221 its reverse (12230223003), we get a palindrome (42262426224).

The spelling of 30032203221 in words is "thirty billion, thirty-two million, two hundred three thousand, two hundred twenty-one".