2243512045421 has 2 divisors, whose sum is σ = 2243512045422. Its totient is φ = 2243512045420.

The previous prime is 2243512045321. The next prime is 2243512045457. The reversal of 2243512045421 is 1245402153422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1863457057225 + 380054988196 = 1365085^2 + 616486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243512045421 - 2¹⁴ = 2243512029037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243512045321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121756022710 + 1121756022711.

It is an arithmetic number, because the mean of its divisors is an integer number (1121756022711).

Almost surely, 2^{2243512045421} is an apocalyptic number.

It is an amenable number.

2243512045421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243512045421 is an equidigital number, since it uses as much as digits as its factorization.

2243512045421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 2243512045421 its reverse (1245402153422), we get a palindrome (3488914198843).

The spelling of 2243512045421 in words is "two trillion, two hundred forty-three billion, five hundred twelve million, forty-five thousand, four hundred twenty-one".