1145321201 has 2 divisors, whose sum is σ = 1145321202. Its totient is φ = 1145321200.

The previous prime is 1145321173. The next prime is 1145321207. The reversal of 1145321201 is 1021235411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 758176225 + 387144976 = 27535^2 + 19676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145321201 - 2¹⁸ = 1145059057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145321207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572660600 + 572660601.

It is an arithmetic number, because the mean of its divisors is an integer number (572660601).

Almost surely, 2^1145321201 is an apocalyptic number.

It is an amenable number.

1145321201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145321201 is an equidigital number, since it uses as much as digits as its factorization.

1145321201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1145321201 is about 33842.5944779652. The cubic root of 1145321201 is about 1046.2667729493.

Adding to 1145321201 its reverse (1021235411), we get a palindrome (2166556612).

The spelling of 1145321201 in words is "one billion, one hundred forty-five million, three hundred twenty-one thousand, two hundred one".