20002121121112 has 32 divisors (see below), whose sum is σ = 40389083995680. Its totient is φ = 9231705792000.

The previous prime is 20002121121097. The next prime is 20002121121133. The reversal of 20002121121112 is 21112112120002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40099237 + ... + 40594987.

It is an arithmetic number, because the mean of its divisors is an integer number (1262158874865).

Almost surely, 2^{20002121121112} is an apocalyptic number.

It is an amenable number.

20002121121112 is an abundant number, since it is smaller than the sum of its proper divisors (20386962874568).

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

20002121121112 is a wasteful number, since it uses less digits than its factorization.

20002121121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883723 (or 883719 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20002121121112 its reverse (21112112120002), we get a palindrome (41114233241114).

The spelling of 20002121121112 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".