2243512045321 has 2 divisors, whose sum is σ = 2243512045322. Its totient is φ = 2243512045320.

The previous prime is 2243512045319. The next prime is 2243512045421. The reversal of 2243512045321 is 1235402153422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2150727839296 + 92784206025 = 1466536^2 + 304605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243512045321 - 2¹ = 2243512045319 is a prime.

Together with 2243512045319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2243512045421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121756022660 + 1121756022661.

It is an arithmetic number, because the mean of its divisors is an integer number (1121756022661).

Almost surely, 2^{2243512045321} is an apocalyptic number.

It is an amenable number.

2243512045321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243512045321 is an equidigital number, since it uses as much as digits as its factorization.

2243512045321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 2243512045321 its reverse (1235402153422), we get a palindrome (3478914198743).

The spelling of 2243512045321 in words is "two trillion, two hundred forty-three billion, five hundred twelve million, forty-five thousand, three hundred twenty-one".