20112332201312 has 144 divisors (see below), whose sum is σ = 44747587019520. Its totient is φ = 8877615791616.

The previous prime is 20112332201309. The next prime is 20112332201347. The reversal of 20112332201312 is 21310223321102.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1397944583 + ... + 1397958969.

It is an arithmetic number, because the mean of its divisors is an integer number (310747132080).

Almost surely, 2^{20112332201312} 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 20112332201312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22373793509760).

20112332201312 is an abundant number, since it is smaller than the sum of its proper divisors (24635254818208).

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

20112332201312 is a wasteful number, since it uses less digits than its factorization.

20112332201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25685 (or 25664 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20112332201312 its reverse (21310223321102), we get a palindrome (41422555522414).

The spelling of 20112332201312 in words is "twenty trillion, one hundred twelve billion, three hundred thirty-two million, two hundred one thousand, three hundred twelve".