2001233212213 has 8 divisors (see below), whose sum is σ = 2025018780120. Its totient is φ = 1977512017920.

The previous prime is 2001233212211. The next prime is 2001233212261. The reversal of 2001233212213 is 3122123321002.

It can be written as a sum of positive squares in 4 ways, for example, as 652099855729 + 1349133356484 = 807527^2 + 1161522^2 .

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 2001233212213 - 2¹ = 2001233212211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001233212211) 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, 16030858 + ... + 16155211.

It is an arithmetic number, because the mean of its divisors is an integer number (253127347515).

Almost surely, 2^{2001233212213} is an apocalyptic number.

It is an amenable number.

2001233212213 is a deficient number, since it is larger than the sum of its proper divisors (23785567907).

2001233212213 is an equidigital number, since it uses as much as digits as its factorization.

2001233212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32186807.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2001233212213 its reverse (3122123321002), we get a palindrome (5123356533215).

The spelling of 2001233212213 in words is "two trillion, one billion, two hundred thirty-three million, two hundred twelve thousand, two hundred thirteen".