2001222111313 has 8 divisors (see below), whose sum is σ = 2008508887080. Its totient is φ = 1993936506240.

The previous prime is 2001222111289. The next prime is 2001222111323. The reversal of 2001222111313 is 3131112221002.

It can be written as a sum of positive squares in 4 ways, for example, as 170905347649 + 1830316763664 = 413407^2 + 1352892^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001222111313 - 2²¹ = 2001220014161 is a prime.

It is a super-2 number, since 2×2001222111313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001222111323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3208483 + ... + 3781111.

It is an arithmetic number, because the mean of its divisors is an integer number (251063610885).

Almost surely, 2^{2001222111313} is an apocalyptic number.

It is an amenable number.

2001222111313 is a deficient number, since it is larger than the sum of its proper divisors (7286775767).

2001222111313 is a wasteful number, since it uses less digits than its factorization.

2001222111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585347.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2001222111313 its reverse (3131112221002), we get a palindrome (5132334332315).

The spelling of 2001222111313 in words is "two trillion, one billion, two hundred twenty-two million, one hundred eleven thousand, three hundred thirteen".