20021100121112 has 32 divisors (see below), whose sum is σ = 37835240644080. Its totient is φ = 9931739450880.

The previous prime is 20021100121097. The next prime is 20021100121133. The reversal of 20021100121112 is 21112100112002.

It is a congruent number.

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, 2052308 + ... + 6652380.

Almost surely, 2^{20021100121112} is an apocalyptic number.

It is an amenable number.

20021100121112 is a deficient number, since it is larger than the sum of its proper divisors (17814140522968).

20021100121112 is a wasteful number, since it uses less digits than its factorization.

20021100121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604363 (or 4604359 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021100121112 its reverse (21112100112002), we get a palindrome (41133200233114).

The spelling of 20021100121112 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred twenty-one thousand, one hundred twelve".