1312201001 has 2 divisors, whose sum is σ = 1312201002. Its totient is φ = 1312201000.

The previous prime is 1312200983. The next prime is 1312201013. The reversal of 1312201001 is 1001022131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1027266601 + 284934400 = 32051^2 + 16880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312201001 - 2¹⁴ = 1312184617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312201031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656100500 + 656100501.

It is an arithmetic number, because the mean of its divisors is an integer number (656100501).

Almost surely, 2^1312201001 is an apocalyptic number.

It is an amenable number.

1312201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312201001 is an equidigital number, since it uses as much as digits as its factorization.

1312201001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1312201001 is about 36224.3150521856. The cubic root of 1312201001 is about 1094.7966375883.

Adding to 1312201001 its reverse (1001022131), we get a palindrome (2313223132).

The spelling of 1312201001 in words is "one billion, three hundred twelve million, two hundred one thousand, one".