20112102022021 has 32 divisors (see below), whose sum is σ = 21391770816000. Its totient is φ = 18890248785408.

The previous prime is 20112102021997. The next prime is 20112102022031. The reversal of 20112102022021 is 12022020121102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20112102022021 - 2⁵ = 20112102021989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112102021986 and 20112102022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112102022031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17475775 + ... + 18591043.

It is an arithmetic number, because the mean of its divisors is an integer number (668492838000).

Almost surely, 2^{20112102022021} is an apocalyptic number.

It is an amenable number.

20112102022021 is a deficient number, since it is larger than the sum of its proper divisors (1279668793979).

20112102022021 is a wasteful number, since it uses less digits than its factorization.

20112102022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115533.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20112102022021 its reverse (12022020121102), we get a palindrome (32134122143123).

The spelling of 20112102022021 in words is "twenty trillion, one hundred twelve billion, one hundred two million, twenty-two thousand, twenty-one".