30013212112 has 20 divisors (see below), whose sum is σ = 62623721860. Its totient is φ = 13852251648.

The previous prime is 30013212109. The next prime is 30013212133. The reversal of 30013212112 is 21121231003.

It can be written as a sum of positive squares in 2 ways, for example, as 5852862016 + 24160350096 = 76504^2 + 155436^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 72146937 + ... + 72147352.

It is an arithmetic number, because the mean of its divisors is an integer number (3131186093).

Almost surely, 2^30013212112 is an apocalyptic number.

It is an amenable number.

30013212112 is an abundant number, since it is smaller than the sum of its proper divisors (32610509748).

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

30013212112 is a wasteful number, since it uses less digits than its factorization.

30013212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144294310 (or 144294304 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30013212112 its reverse (21121231003), we get a palindrome (51134443115).

The spelling of 30013212112 in words is "thirty billion, thirteen million, two hundred twelve thousand, one hundred twelve".