2202120102121 has 4 divisors (see below), whose sum is σ = 2202550797652. Its totient is φ = 2201689406592.

The previous prime is 2202120102041. The next prime is 2202120102167. The reversal of 2202120102121 is 1212010212022.

It is a happy number.

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 677598970896 + 1524521131225 = 823164^2 + 1234715^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202120102121 - 2³⁹ = 1652364288233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202120102095 and 2202120102104.

It is not an unprimeable number, because it can be changed into a prime (2202120102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215340096 + ... + 215350321.

It is an arithmetic number, because the mean of its divisors is an integer number (550637699413).

Almost surely, 2^{2202120102121} is an apocalyptic number.

It is an amenable number.

2202120102121 is a deficient number, since it is larger than the sum of its proper divisors (430695531).

2202120102121 is an equidigital number, since it uses as much as digits as its factorization.

2202120102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430695530.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2202120102121 its reverse (1212010212022), we get a palindrome (3414130314143).

The spelling of 2202120102121 in words is "two trillion, two hundred two billion, one hundred twenty million, one hundred two thousand, one hundred twenty-one".