1313021112001 has 4 divisors (see below), whose sum is σ = 1358297702100. Its totient is φ = 1267744521904.

The previous prime is 1313021111981. The next prime is 1313021112041. The reversal of 1313021112001 is 1002111203131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 350228423601 + 962792688400 = 591801^2 + 981220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313021112001 - 2³⁹ = 763265298113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313021112041) 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, 22638295006 + ... + 22638295063.

It is an arithmetic number, because the mean of its divisors is an integer number (339574425525).

Almost surely, 2^{1313021112001} is an apocalyptic number.

It is an amenable number.

1313021112001 is a deficient number, since it is larger than the sum of its proper divisors (45276590099).

1313021112001 is an equidigital number, since it uses as much as digits as its factorization.

1313021112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45276590098.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1313021112001 its reverse (1002111203131), we get a palindrome (2315132315132).

The spelling of 1313021112001 in words is "one trillion, three hundred thirteen billion, twenty-one million, one hundred twelve thousand, one".