20023321101112 has 64 divisors (see below), whose sum is σ = 43629749035200. Its totient is φ = 8437020963840.

The previous prime is 20023321101103. The next prime is 20023321101131. The reversal of 20023321101112 is 21110112332002.

It is a super-2 number, since 2×20023321101112² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20023321101112.

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, 6459228 + ... + 9042580.

It is an arithmetic number, because the mean of its divisors is an integer number (681714828675).

Almost surely, 2^{20023321101112} 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 20023321101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21814874517600).

20023321101112 is an abundant number, since it is smaller than the sum of its proper divisors (23606427934088).

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

20023321101112 is a wasteful number, since it uses less digits than its factorization.

20023321101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585696 (or 2585692 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20023321101112 its reverse (21110112332002), we get a palindrome (41133433433114).

The spelling of 20023321101112 in words is "twenty trillion, twenty-three billion, three hundred twenty-one million, one hundred one thousand, one hundred twelve".