20021101111112 has 32 divisors (see below), whose sum is σ = 38413194019200. Its totient is φ = 9777590176704.

The previous prime is 20021101111097. The next prime is 20021101111169. The reversal of 20021101111112 is 21111110112002.

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, 22668689 + ... + 23535327.

It is an arithmetic number, because the mean of its divisors is an integer number (1200412313100).

Almost surely, 2^{20021101111112} is an apocalyptic number.

It is an amenable number.

20021101111112 is a deficient number, since it is larger than the sum of its proper divisors (18392092908088).

20021101111112 is a wasteful number, since it uses less digits than its factorization.

20021101111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933845 (or 933841 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20021101111112 its reverse (21111110112002), we get a palindrome (41132211223114).

The spelling of 20021101111112 in words is "twenty trillion, twenty-one billion, one hundred one million, one hundred eleven thousand, one hundred twelve".