2200100121 has 24 divisors (see below), whose sum is σ = 3342243840. Its totient is φ = 1391898816.

The previous prime is 2200100107. The next prime is 2200100141. The reversal of 2200100121 is 1210010022.

It is not a de Polignac number, because 2200100121 - 2⁹ = 2200099609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2200100141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15556 + ... + 68133.

It is an arithmetic number, because the mean of its divisors is an integer number (139260160).

Almost surely, 2^2200100121 is an apocalyptic number.

It is an amenable number.

2200100121 is a deficient number, since it is larger than the sum of its proper divisors (1142143719).

2200100121 is a wasteful number, since it uses less digits than its factorization.

2200100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83845 (or 83842 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2200100121 is about 46905.2248795377. The cubic root of 2200100121 is about 1300.6111763273.

Adding to 2200100121 its reverse (1210010022), we get a palindrome (3410110143).

Subtracting from 2200100121 its reverse (1210010022), we obtain a palindrome (990090099).

The spelling of 2200100121 in words is "two billion, two hundred million, one hundred thousand, one hundred twenty-one".