2100112212021 has 4 divisors (see below), whose sum is σ = 2800149616032. Its totient is φ = 1400074808012.

The previous prime is 2100112211933. The next prime is 2100112212031. The reversal of 2100112212021 is 1202122110012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100112212021 - 2¹⁷ = 2100112080949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100112212031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350018702001 + ... + 350018702006.

It is an arithmetic number, because the mean of its divisors is an integer number (700037404008).

Almost surely, 2^{2100112212021} is an apocalyptic number.

It is an amenable number.

2100112212021 is a deficient number, since it is larger than the sum of its proper divisors (700037404011).

2100112212021 is an equidigital number, since it uses as much as digits as its factorization.

2100112212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700037404010.

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

Adding to 2100112212021 its reverse (1202122110012), we get a palindrome (3302234322033).

The spelling of 2100112212021 in words is "two trillion, one hundred billion, one hundred twelve million, two hundred twelve thousand, twenty-one".