20021001122112 has 56 divisors (see below), whose sum is σ = 53697879188736. Its totient is φ = 6582246939648.

The previous prime is 20021001122081. The next prime is 20021001122119. The reversal of 20021001122112 is 21122110012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021001122091 and 20021001122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021001122119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714205488 + ... + 714233519.

Almost surely, 2^{20021001122112} is an apocalyptic number.

It is an amenable number.

20021001122112 is an abundant number, since it is smaller than the sum of its proper divisors (33676878066624).

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

20021001122112 is a wasteful number, since it uses less digits than its factorization.

20021001122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428439095 (or 1428439085 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021001122112 its reverse (21122110012002), we get a palindrome (41143111134114).

The spelling of 20021001122112 in words is "twenty trillion, twenty-one billion, one million, one hundred twenty-two thousand, one hundred twelve".