30021312112 has 80 divisors (see below), whose sum is σ = 67590173952. Its totient is φ = 12766223360.

The previous prime is 30021312109. The next prime is 30021312131. The reversal of 30021312112 is 21121312003.

It is a super-2 number, since 2×30021312112² (a number of 22 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 469623 + ... + 529705.

Almost surely, 2^30021312112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30021312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33795086976).

30021312112 is an abundant number, since it is smaller than the sum of its proper divisors (37568861840).

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

30021312112 is a wasteful number, since it uses less digits than its factorization.

30021312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60286 (or 60280 counting only the distinct ones).

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

Adding to 30021312112 its reverse (21121312003), we get a palindrome (51142624115).

The spelling of 30021312112 in words is "thirty billion, twenty-one million, three hundred twelve thousand, one hundred twelve".