2200100220121 has 4 divisors (see below), whose sum is σ = 2200103207092. Its totient is φ = 2200097233152.

The previous prime is 2200100220091. The next prime is 2200100220127. The reversal of 2200100220121 is 1210220010022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 113407297600 + 2086692922521 = 336760^2 + 1444539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200100220121 - 2⁵ = 2200100220089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2200100220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485221 + ... + 2153053.

It is an arithmetic number, because the mean of its divisors is an integer number (550025801773).

Almost surely, 2^{2200100220121} is an apocalyptic number.

It is an amenable number.

2200100220121 is a deficient number, since it is larger than the sum of its proper divisors (2986971).

2200100220121 is a wasteful number, since it uses less digits than its factorization.

2200100220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986970.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2200100220121 its reverse (1210220010022), we get a palindrome (3410320230143).

The spelling of 2200100220121 in words is "two trillion, two hundred billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".