2001222313213 has 2 divisors, whose sum is σ = 2001222313214. Its totient is φ = 2001222313212.

The previous prime is 2001222313169. The next prime is 2001222313247. The reversal of 2001222313213 is 3123132221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1904449680324 + 96772632889 = 1380018^2 + 311083^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001222313213 - 2²⁵ = 2001188758781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001222343213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000611156606 + 1000611156607.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611156607).

Almost surely, 2^{2001222313213} is an apocalyptic number.

It is an amenable number.

2001222313213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001222313213 is an equidigital number, since it uses as much as digits as its factorization.

2001222313213 is an evil number, because the sum of its binary digits is even.

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

Adding to 2001222313213 its reverse (3123132221002), we get a palindrome (5124354534215).

The spelling of 2001222313213 in words is "two trillion, one billion, two hundred twenty-two million, three hundred thirteen thousand, two hundred thirteen".