4045122691321 has 2 divisors, whose sum is σ = 4045122691322. Its totient is φ = 4045122691320.

The previous prime is 4045122691271. The next prime is 4045122691349. The reversal of 4045122691321 is 1231962215404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2604076101225 + 1441046590096 = 1613715^2 + 1200436^2 .

It is a cyclic number.

It is not a de Polignac number, because 4045122691321 - 2¹¹ = 4045122689273 is a prime.

It is not a weakly prime, because it can be changed into another prime (4045120691321) 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, 2022561345660 + 2022561345661.

It is an arithmetic number, because the mean of its divisors is an integer number (2022561345661).

Almost surely, 2^{4045122691321} is an apocalyptic number.

It is an amenable number.

4045122691321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045122691321 is an equidigital number, since it uses as much as digits as its factorization.

4045122691321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 4045122691321 in words is "four trillion, forty-five billion, one hundred twenty-two million, six hundred ninety-one thousand, three hundred twenty-one".