2100112221 has 64 divisors (see below), whose sum is σ = 3175096320. Its totient is φ = 1227832320.

The previous prime is 2100112213. The next prime is 2100112241. The reversal of 2100112221 is 1222110012.

It is not a de Polignac number, because 2100112221 - 2³ = 2100112213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2100112197 and 2100112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100112241) 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 63 ways as a sum of consecutive naturals, for example, 12139291 + ... + 12139463.

It is an arithmetic number, because the mean of its divisors is an integer number (49610880).

Almost surely, 2^2100112221 is an apocalyptic number.

It is an amenable number.

2100112221 is a deficient number, since it is larger than the sum of its proper divisors (1074984099).

2100112221 is a wasteful number, since it uses less digits than its factorization.

2100112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2100112221 is about 45826.9813646939. The cubic root of 2100112221 is about 1280.6019753549.

Adding to 2100112221 its reverse (1222110012), we get a palindrome (3322222233).

The spelling of 2100112221 in words is "two billion, one hundred million, one hundred twelve thousand, two hundred twenty-one".