1312221031001 has 32 divisors (see below), whose sum is σ = 1374185779200. Its totient is φ = 1251474174720.

The previous prime is 1312221030983. The next prime is 1312221031003. The reversal of 1312221031001 is 1001301222131.

It is not a de Polignac number, because 1312221031001 - 2²⁶ = 1312153922137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312221031003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1295380571 + ... + 1295381583.

It is an arithmetic number, because the mean of its divisors is an integer number (42943305600).

Almost surely, 2^{1312221031001} is an apocalyptic number.

It is an amenable number.

1312221031001 is a deficient number, since it is larger than the sum of its proper divisors (61964748199).

1312221031001 is a wasteful number, since it uses less digits than its factorization.

1312221031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1312221031001 its reverse (1001301222131), we get a palindrome (2313522253132).

The spelling of 1312221031001 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, thirty-one thousand, one".