20330031012012 has 96 divisors (see below), whose sum is σ = 53941280476160. Its totient is φ = 6618093491520.

The previous prime is 20330031012001. The next prime is 20330031012061. The reversal of 20330031012012 is 21021013003302.

20330031012012 is a `hidden beast` number, since 2 + 0 + 330 + 0 + 310 + 1 + 20 + 1 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31168173 + ... + 31813755.

Almost surely, 2^{20330031012012} 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 20330031012012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26970640238080).

20330031012012 is an abundant number, since it is smaller than the sum of its proper divisors (33611249464148).

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

20330031012012 is a wasteful number, since it uses less digits than its factorization.

20330031012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652420 (or 652412 counting only the distinct ones).

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

Adding to 20330031012012 its reverse (21021013003302), we get a palindrome (41351044015314).

The spelling of 20330031012012 in words is "twenty trillion, three hundred thirty billion, thirty-one million, twelve thousand, twelve".