2243613121 has 4 divisors (see below), whose sum is σ = 2277099952. Its totient is φ = 2210126292.

The previous prime is 2243613059. The next prime is 2243613133. The reversal of 2243613121 is 1213163422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1213163422 = 2 ⋅606581711.

It is a cyclic number.

It is not a de Polignac number, because 2243613121 - 2¹⁷ = 2243482049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2243610121) 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, 16743315 + ... + 16743448.

It is an arithmetic number, because the mean of its divisors is an integer number (569274988).

Almost surely, 2^2243613121 is an apocalyptic number.

It is an amenable number.

2243613121 is a deficient number, since it is larger than the sum of its proper divisors (33486831).

2243613121 is an equidigital number, since it uses as much as digits as its factorization.

2243613121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33486830.

The product of its digits is 1728, while the sum is 25.

The square root of 2243613121 is about 47366.7934422418. The cubic root of 2243613121 is about 1309.1296436892.

Adding to 2243613121 its reverse (1213163422), we get a palindrome (3456776543).

The spelling of 2243613121 in words is "two billion, two hundred forty-three million, six hundred thirteen thousand, one hundred twenty-one".