2240421443321 has 2 divisors, whose sum is σ = 2240421443322. Its totient is φ = 2240421443320.

The previous prime is 2240421443317. The next prime is 2240421443357. The reversal of 2240421443321 is 1233441240422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2230303296400 + 10118146921 = 1493420^2 + 100589^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240421443321 - 2² = 2240421443317 is a prime.

It is not a weakly prime, because it can be changed into another prime (2240421443371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120210721660 + 1120210721661.

It is an arithmetic number, because the mean of its divisors is an integer number (1120210721661).

Almost surely, 2^{2240421443321} is an apocalyptic number.

It is an amenable number.

2240421443321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240421443321 is an equidigital number, since it uses as much as digits as its factorization.

2240421443321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 2240421443321 its reverse (1233441240422), we get a palindrome (3473862683743).

The spelling of 2240421443321 in words is "two trillion, two hundred forty billion, four hundred twenty-one million, four hundred forty-three thousand, three hundred twenty-one".