2001222213 has 16 divisors (see below), whose sum is σ = 2702439936. Its totient is φ = 1317100400.

The previous prime is 2001222151. The next prime is 2001222221. The reversal of 2001222213 is 3122221002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2001222213 - 2⁶ = 2001222149 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2001222192 and 2001222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001224213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517738 + ... + 521588.

It is an arithmetic number, because the mean of its divisors is an integer number (168902496).

Almost surely, 2^2001222213 is an apocalyptic number.

It is an amenable number.

2001222213 is a deficient number, since it is larger than the sum of its proper divisors (701217723).

2001222213 is a wasteful number, since it uses less digits than its factorization.

2001222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6024.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2001222213 is about 44735.0222197329. The cubic root of 2001222213 is about 1260.1776462804.

Adding to 2001222213 its reverse (3122221002), we get a palindrome (5123443215).

The spelling of 2001222213 in words is "two billion, one million, two hundred twenty-two thousand, two hundred thirteen".