1313231222001 has 4 divisors (see below), whose sum is σ = 1750974962672. Its totient is φ = 875487481332.

The previous prime is 1313231221993. The next prime is 1313231222071. The reversal of 1313231222001 is 1002221323131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1313231222001 - 2³ = 1313231221993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313231222071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218871870331 + ... + 218871870336.

It is an arithmetic number, because the mean of its divisors is an integer number (437743740668).

Almost surely, 2^{1313231222001} is an apocalyptic number.

It is an amenable number.

1313231222001 is a deficient number, since it is larger than the sum of its proper divisors (437743740671).

1313231222001 is an equidigital number, since it uses as much as digits as its factorization.

1313231222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437743740670.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1313231222001 its reverse (1002221323131), we get a palindrome (2315452545132).

The spelling of 1313231222001 in words is "one trillion, three hundred thirteen billion, two hundred thirty-one million, two hundred twenty-two thousand, one".