30231102221 has 4 divisors (see below), whose sum is σ = 30233020992. Its totient is φ = 30229183452.

The previous prime is 30231102211. The next prime is 30231102269. The reversal of 30231102221 is 12220113203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30231102221 - 2⁶ = 30231102157 is a prime.

It is a super-2 number, since 2×30231102221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30231102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231102211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935555 + ... + 967328.

It is an arithmetic number, because the mean of its divisors is an integer number (7558255248).

Almost surely, 2^30231102221 is an apocalyptic number.

It is an amenable number.

30231102221 is a deficient number, since it is larger than the sum of its proper divisors (1918771).

30231102221 is a wasteful number, since it uses less digits than its factorization.

30231102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918770.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30231102221 its reverse (12220113203), we get a palindrome (42451215424).

The spelling of 30231102221 in words is "thirty billion, two hundred thirty-one million, one hundred two thousand, two hundred twenty-one".