2021112112111 has 8 divisors (see below), whose sum is σ = 2129867609184. Its totient is φ = 1914096703200.

The previous prime is 2021112112067. The next prime is 2021112112127. The reversal of 2021112112111 is 1112112111202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021112112111 - 2²³ = 2021103723503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021112110111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435019656 + ... + 435024301.

It is an arithmetic number, because the mean of its divisors is an integer number (266233451148).

Almost surely, 2^{2021112112111} is an apocalyptic number.

2021112112111 is a deficient number, since it is larger than the sum of its proper divisors (108755497073).

2021112112111 is a wasteful number, since it uses less digits than its factorization.

2021112112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870044081.

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

Adding to 2021112112111 its reverse (1112112111202), we get a palindrome (3133224223313).

Subtracting from 2021112112111 its reverse (1112112111202), we obtain a palindrome (909000000909).

It can be divided in two parts, 202 and 1112112111, that multiplied together give a palindrome (224646646422).

The spelling of 2021112112111 in words is "two trillion, twenty-one billion, one hundred twelve million, one hundred twelve thousand, one hundred eleven".