30112213221 has 24 divisors (see below), whose sum is σ = 43761377504. Its totient is φ = 19952321760.

The previous prime is 30112213211. The next prime is 30112213223. The reversal of 30112213221 is 12231221103.

It is not a de Polignac number, because 30112213221 - 2¹⁴ = 30112196837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30112213194 and 30112213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30112213223) 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, 1427070 + ... + 1448016.

Almost surely, 2^30112213221 is an apocalyptic number.

It is an amenable number.

30112213221 is a deficient number, since it is larger than the sum of its proper divisors (13649164283).

30112213221 is a wasteful number, since it uses less digits than its factorization.

30112213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21921 (or 21918 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 30112213221 its reverse (12231221103), we get a palindrome (42343434324).

The spelling of 30112213221 in words is "thirty billion, one hundred twelve million, two hundred thirteen thousand, two hundred twenty-one".