20021112002120 has 32 divisors (see below), whose sum is σ = 45048950539200. Its totient is φ = 8008187283648.

The previous prime is 20021112002113. The next prime is 20021112002161. The reversal of 20021112002120 is 2120021112002.

It is a junction number, because it is equal to n+sod(n) for n = 20021112002095 and 20021112002104.

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 7 ways as a sum of consecutive naturals, for example, 6785474 + ... + 9278193.

It is an arithmetic number, because the mean of its divisors is an integer number (1407779704350).

Almost surely, 2^{20021112002120} is an apocalyptic number.

20021112002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021112002120 is an abundant number, since it is smaller than the sum of its proper divisors (25027838537080).

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

20021112002120 is a wasteful number, since it uses less digits than its factorization.

20021112002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16094837 (or 16094833 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021112002120 its reverse (2120021112002), we get a palindrome (22141133114122).

The spelling of 20021112002120 in words is "twenty trillion, twenty-one billion, one hundred twelve million, two thousand, one hundred twenty".