30112144220 has 12 divisors (see below), whose sum is σ = 63235502904. Its totient is φ = 12044857680.

The previous prime is 30112144213. The next prime is 30112144261. The reversal of 30112144220 is 2244121103.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1505607211 = 30112144220 / (3 + 0 + 1 + 1 + 2 + 1 + 4 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30112144192 and 30112144201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752803586 + ... + 752803625.

It is an arithmetic number, because the mean of its divisors is an integer number (5269625242).

Almost surely, 2^30112144220 is an apocalyptic number.

It is an amenable number.

30112144220 is an abundant number, since it is smaller than the sum of its proper divisors (33123358684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30112144220 is a wasteful number, since it uses less digits than its factorization.

30112144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505607220 (or 1505607218 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30112144220 its reverse (2244121103), we get a palindrome (32356265323).

The spelling of 30112144220 in words is "thirty billion, one hundred twelve million, one hundred forty-four thousand, two hundred twenty".