2203213121 has 4 divisors (see below), whose sum is σ = 2274284544. Its totient is φ = 2132141700.

The previous prime is 2203213109. The next prime is 2203213147. The reversal of 2203213121 is 1213123022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2203213121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2203213121.

It is not an unprimeable number, because it can be changed into a prime (2203213321) 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, 35535665 + ... + 35535726.

It is an arithmetic number, because the mean of its divisors is an integer number (568571136).

Almost surely, 2^2203213121 is an apocalyptic number.

It is an amenable number.

2203213121 is a deficient number, since it is larger than the sum of its proper divisors (71071423).

2203213121 is an equidigital number, since it uses as much as digits as its factorization.

2203213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71071422.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2203213121 is about 46938.3970859679. The cubic root of 2203213121 is about 1301.2243142560.

Adding to 2203213121 its reverse (1213123022), we get a palindrome (3416336143).

Subtracting from 2203213121 its reverse (1213123022), we obtain a palindrome (990090099).

It can be divided in two parts, 22032 and 13121, that added together give a palindrome (35153).

The spelling of 2203213121 in words is "two billion, two hundred three million, two hundred thirteen thousand, one hundred twenty-one".