20011321442112 has 336 divisors, whose sum is σ = 71479778637312. Its totient is φ = 4797918627840.

The previous prime is 20011321442059. The next prime is 20011321442143. The reversal of 20011321442112 is 21124412311002.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1506178 + ... + 6503169.

Almost surely, 2^{20011321442112} is an apocalyptic number.

20011321442112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011321442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35739889318656).

20011321442112 is an abundant number, since it is smaller than the sum of its proper divisors (51468457195200).

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

20011321442112 is a wasteful number, since it uses less digits than its factorization.

20011321442112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009406 (or 8009383 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 20011321442112 its reverse (21124412311002), we get a palindrome (41135733753114).

The spelling of 20011321442112 in words is "twenty trillion, eleven billion, three hundred twenty-one million, four hundred forty-two thousand, one hundred twelve".