30031220212 has 24 divisors (see below), whose sum is σ = 60822728960. Its totient is φ = 12707604000.

The previous prime is 30031220179. The next prime is 30031220231. The reversal of 30031220212 is 21202213003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6786039 + ... + 6790462.

Almost surely, 2^30031220212 is an apocalyptic number.

It is an amenable number.

30031220212 is an abundant number, since it is smaller than the sum of its proper divisors (30791508748).

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

30031220212 is a wasteful number, since it uses less digits than its factorization.

30031220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13576591 (or 13576589 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30031220212 its reverse (21202213003), we get a palindrome (51233433215).

The spelling of 30031220212 in words is "thirty billion, thirty-one million, two hundred twenty thousand, two hundred twelve".