30031212004220 has 96 divisors (see below), whose sum is σ = 72132212275200. Its totient is φ = 10288231709184.

The previous prime is 30031212004159. The next prime is 30031212004223. The reversal of 30031212004220 is 2240021213003.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30031212004192 and 30031212004201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031212004223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2473123469 + ... + 2473135611.

It is an arithmetic number, because the mean of its divisors is an integer number (751377211200).

Almost surely, 2^{30031212004220} is an apocalyptic number.

It is an amenable number.

30031212004220 is an abundant number, since it is smaller than the sum of its proper divisors (42101000270980).

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

30031212004220 is a wasteful number, since it uses less digits than its factorization.

30031212004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24747 (or 24745 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30031212004220 its reverse (2240021213003), we get a palindrome (32271233217223).

The spelling of 30031212004220 in words is "thirty trillion, thirty-one billion, two hundred twelve million, four thousand, two hundred twenty".