2021100112122 has 64 divisors (see below), whose sum is σ = 5002502179584. Its totient is φ = 530092408320.

The previous prime is 2021100112081. The next prime is 2021100112139. The reversal of 2021100112122 is 2212110011202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10126723 + ... + 10324374.

It is an arithmetic number, because the mean of its divisors is an integer number (78164096556).

Almost surely, 2^{2021100112122} is an apocalyptic number.

2021100112122 is an abundant number, since it is smaller than the sum of its proper divisors (2981402067462).

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

2021100112122 is a wasteful number, since it uses less digits than its factorization.

2021100112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20451303.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021100112122 its reverse (2212110011202), we get a palindrome (4233210123324).

The spelling of 2021100112122 in words is "two trillion, twenty-one billion, one hundred million, one hundred twelve thousand, one hundred twenty-two".