20021112120000 has 560 divisors, whose sum is σ = 66913375240800. Its totient is φ = 5281284096000.

The previous prime is 20021112119989. The next prime is 20021112120017. The reversal of 20021112120000 is 2121112002.

It is a super-2 number, since 2×20021112120000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4595157822 + ... + 4595162178.

Almost surely, 2^{20021112120000} is an apocalyptic number.

20021112120000 is a gapful number since it is divisible by the number (20) 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 20021112120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33456687620400).

20021112120000 is an abundant number, since it is smaller than the sum of its proper divisors (46892263120800).

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

20021112120000 is a wasteful number, since it uses less digits than its factorization.

20021112120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798 (or 4773 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021112120000 its reverse (2121112002), we get a palindrome (20023233232002).

The spelling of 20021112120000 in words is "twenty trillion, twenty-one billion, one hundred twelve million, one hundred twenty thousand".