1001123313213 has 4 divisors (see below), whose sum is σ = 1334831084288. Its totient is φ = 667415542140.

The previous prime is 1001123313181. The next prime is 1001123313233. The reversal of 1001123313213 is 3123133211001.

It is a happy number.

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 1001123313213 - 2⁵ = 1001123313181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001123313213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001123313233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166853885533 + ... + 166853885538.

It is an arithmetic number, because the mean of its divisors is an integer number (333707771072).

Almost surely, 2^{1001123313213} is an apocalyptic number.

It is an amenable number.

1001123313213 is a deficient number, since it is larger than the sum of its proper divisors (333707771075).

1001123313213 is an equidigital number, since it uses as much as digits as its factorization.

1001123313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333707771074.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1001123313213 its reverse (3123133211001), we get a palindrome (4124256524214).

The spelling of 1001123313213 in words is "one trillion, one billion, one hundred twenty-three million, three hundred thirteen thousand, two hundred thirteen".