2100112221021 has 16 divisors (see below), whose sum is σ = 2949747225600. Its totient is φ = 1325387080368.

The previous prime is 2100112220993. The next prime is 2100112221037. The reversal of 2100112221021 is 1201222110012.

It is not a de Polignac number, because 2100112221021 - 2⁵ = 2100112220989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100112221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13806831 + ... + 13958108.

It is an arithmetic number, because the mean of its divisors is an integer number (184359201600).

Almost surely, 2^{2100112221021} is an apocalyptic number.

It is an amenable number.

2100112221021 is a deficient number, since it is larger than the sum of its proper divisors (849635004579).

2100112221021 is a wasteful number, since it uses less digits than its factorization.

2100112221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27766288.

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

Adding to 2100112221021 its reverse (1201222110012), we get a palindrome (3301334331033).

The spelling of 2100112221021 in words is "two trillion, one hundred billion, one hundred twelve million, two hundred twenty-one thousand, twenty-one".