2243409221 has 2 divisors, whose sum is σ = 2243409222. Its totient is φ = 2243409220.

The previous prime is 2243409067. The next prime is 2243409229. The reversal of 2243409221 is 1229043422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1445064196 + 798345025 = 38014^2 + 28255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2243409221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243409229) 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 as a sum of consecutive naturals, namely, 1121704610 + 1121704611.

It is an arithmetic number, because the mean of its divisors is an integer number (1121704611).

Almost surely, 2^2243409221 is an apocalyptic number.

It is an amenable number.

2243409221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243409221 is an equidigital number, since it uses as much as digits as its factorization.

2243409221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2243409221 is about 47364.6410416040. The cubic root of 2243409221 is about 1309.0899845016.

The spelling of 2243409221 in words is "two billion, two hundred forty-three million, four hundred nine thousand, two hundred twenty-one".