1321160001 has 12 divisors (see below), whose sum is σ = 2049146352. Its totient is φ = 754948488.

The previous prime is 1321159969. The next prime is 1321160017. The reversal of 1321160001 is 1000611231.

It is not a de Polignac number, because 1321160001 - 2⁵ = 1321159969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321160081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4493595 + ... + 4493888.

It is an arithmetic number, because the mean of its divisors is an integer number (170762196).

Almost surely, 2^1321160001 is an apocalyptic number.

It is an amenable number.

1321160001 is a deficient number, since it is larger than the sum of its proper divisors (727986351).

1321160001 is an equidigital number, since it uses as much as digits as its factorization.

1321160001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8987500 (or 8987493 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1321160001 is about 36347.7647318236. The cubic root of 1321160001 is about 1097.2825487828.

Adding to 1321160001 its reverse (1000611231), we get a palindrome (2321771232).

The spelling of 1321160001 in words is "one billion, three hundred twenty-one million, one hundred sixty thousand, one".