2202001121 has 4 divisors (see below), whose sum is σ = 2202100500. Its totient is φ = 2201901744.

The previous prime is 2202001111. The next prime is 2202001133. The reversal of 2202001121 is 1211002022.

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 1023040225 + 1178960896 = 31985^2 + 34336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202001121 - 2²⁶ = 2134892257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2202001111) 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 3 ways as a sum of consecutive naturals, for example, 335 + ... + 66363.

It is an arithmetic number, because the mean of its divisors is an integer number (550525125).

Almost surely, 2^2202001121 is an apocalyptic number.

It is an amenable number.

2202001121 is a deficient number, since it is larger than the sum of its proper divisors (99379).

2202001121 is an equidigital number, since it uses as much as digits as its factorization.

2202001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99378.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2202001121 is about 46925.4847710708. The cubic root of 2202001121 is about 1300.9856668717.

Adding to 2202001121 its reverse (1211002022), we get a palindrome (3413003143).

Subtracting from 2202001121 its reverse (1211002022), we obtain a palindrome (990999099).

The spelling of 2202001121 in words is "two billion, two hundred two million, one thousand, one hundred twenty-one".