30212012112 has 80 divisors (see below), whose sum is σ = 81479368320. Its totient is φ = 9628286976.

The previous prime is 30212012057. The next prime is 30212012123. The reversal of 30212012112 is 21121021203.

It is a junction number, because it is equal to n+sod(n) for n = 30212012091 and 30212012100.

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, 2963568 + ... + 2973744.

It is an arithmetic number, because the mean of its divisors is an integer number (1018492104).

Almost surely, 2^30212012112 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 30212012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40739684160).

30212012112 is an abundant number, since it is smaller than the sum of its proper divisors (51267356208).

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

30212012112 is a wasteful number, since it uses less digits than its factorization.

30212012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12900 (or 12894 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30212012112 its reverse (21121021203), we get a palindrome (51333033315).

Subtracting from 30212012112 its reverse (21121021203), we obtain a palindrome (9090990909).

The spelling of 30212012112 in words is "thirty billion, two hundred twelve million, twelve thousand, one hundred twelve".