30021233112 has 96 divisors (see below), whose sum is σ = 87925918080. Its totient is φ = 9198904320.

The previous prime is 30021233107. The next prime is 30021233117. The reversal of 30021233112 is 21133212003.

30021233112 is a `hidden beast` number, since 300 + 21 + 2 + 331 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (30021233107) and next prime (30021233117).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021233117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159033 + ... + 292119.

It is an arithmetic number, because the mean of its divisors is an integer number (915894980).

Almost surely, 2^30021233112 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 30021233112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43962959040).

30021233112 is an abundant number, since it is smaller than the sum of its proper divisors (57904684968).

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

30021233112 is a wasteful number, since it uses less digits than its factorization.

30021233112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133353 (or 133346 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30021233112 its reverse (21133212003), we get a palindrome (51154445115).

The spelling of 30021233112 in words is "thirty billion, twenty-one million, two hundred thirty-three thousand, one hundred twelve".