2200000020121 has 4 divisors (see below), whose sum is σ = 2230137006772. Its totient is φ = 2169863033472.

The previous prime is 2200000020083. The next prime is 2200000020139. The reversal of 2200000020121 is 1210200000022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 403231350025 + 1796768670096 = 635005^2 + 1340436^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200000020121 - 2¹⁷ = 2199999889049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200000020098 and 2200000020107.

It is not an unprimeable number, because it can be changed into a prime (2200000023121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15068493216 + ... + 15068493361.

It is an arithmetic number, because the mean of its divisors is an integer number (557534251693).

Almost surely, 2^{2200000020121} is an apocalyptic number.

It is an amenable number.

2200000020121 is a deficient number, since it is larger than the sum of its proper divisors (30136986651).

2200000020121 is an equidigital number, since it uses as much as digits as its factorization.

2200000020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30136986650.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2200000020121 its reverse (1210200000022), we get a palindrome (3410200020143).

The spelling of 2200000020121 in words is "two trillion, two hundred billion, twenty thousand, one hundred twenty-one".