30231100221 has 24 divisors (see below), whose sum is σ = 49647237120. Its totient is φ = 16258741632.

The previous prime is 30231100213. The next prime is 30231100223. The reversal of 30231100221 is 12200113203.

It is not a de Polignac number, because 30231100221 - 2³ = 30231100213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30231100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231100223) 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, 6046141 + ... + 6051138.

It is an arithmetic number, because the mean of its divisors is an integer number (2068634880).

Almost surely, 2^30231100221 is an apocalyptic number.

It is an amenable number.

30231100221 is a deficient number, since it is larger than the sum of its proper divisors (19416136899).

30231100221 is a wasteful number, since it uses less digits than its factorization.

30231100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12097313 (or 12097306 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30231100221 its reverse (12200113203), we get a palindrome (42431213424).

The spelling of 30231100221 in words is "thirty billion, two hundred thirty-one million, one hundred thousand, two hundred twenty-one".