4245113321 has 2 divisors, whose sum is σ = 4245113322. Its totient is φ = 4245113320.

The previous prime is 4245113317. The next prime is 4245113357. The reversal of 4245113321 is 1233115424.

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., 3691170025 + 553943296 = 60755^2 + 23536^2 .

It is a cyclic number.

It is not a de Polignac number, because 4245113321 - 2² = 4245113317 is a prime.

It is not a weakly prime, because it can be changed into another prime (4245113221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122556660 + 2122556661.

It is an arithmetic number, because the mean of its divisors is an integer number (2122556661).

Almost surely, 2^4245113321 is an apocalyptic number.

It is an amenable number.

4245113321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245113321 is an equidigital number, since it uses as much as digits as its factorization.

4245113321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 4245113321 is about 65154.5341553449. The cubic root of 4245113321 is about 1619.1848412527.

Adding to 4245113321 its reverse (1233115424), we get a palindrome (5478228745).

The spelling of 4245113321 in words is "four billion, two hundred forty-five million, one hundred thirteen thousand, three hundred twenty-one".