30432033221 has 12 divisors (see below), whose sum is σ = 33154095744. Its totient is φ = 27900325800.

The previous prime is 30432033211. The next prime is 30432033227. The reversal of 30432033221 is 12233023403.

It is a de Polignac number, because none of the positive numbers 2^k-30432033221 is a prime.

It is a super-2 number, since 2×30432033221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30432033227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1348475 + ... + 1370856.

It is an arithmetic number, because the mean of its divisors is an integer number (2762841312).

Almost surely, 2^30432033221 is an apocalyptic number.

30432033221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30432033221 is a deficient number, since it is larger than the sum of its proper divisors (2722062523).

30432033221 is a wasteful number, since it uses less digits than its factorization.

30432033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719400 (or 2719381 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 30432033221 its reverse (12233023403), we get a palindrome (42665056624).

The spelling of 30432033221 in words is "thirty billion, four hundred thirty-two million, thirty-three thousand, two hundred twenty-one".