1312021201 has 8 divisors (see below), whose sum is σ = 1337783040. Its totient is φ = 1286296752.

The previous prime is 1312021097. The next prime is 1312021229. The reversal of 1312021201 is 1021202131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312021201 - 2²³ = 1303632593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312021241) 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 7 ways as a sum of consecutive naturals, for example, 67666 + ... + 84868.

It is an arithmetic number, because the mean of its divisors is an integer number (167222880).

Almost surely, 2^1312021201 is an apocalyptic number.

It is an amenable number.

1312021201 is a deficient number, since it is larger than the sum of its proper divisors (25761839).

1312021201 is a wasteful number, since it uses less digits than its factorization.

1312021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18695.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1312021201 is about 36221.8332087154. The cubic root of 1312021201 is about 1094.7466316755.

Adding to 1312021201 its reverse (1021202131), we get a palindrome (2333223332).

The spelling of 1312021201 in words is "one billion, three hundred twelve million, twenty-one thousand, two hundred one".