2001222210 has 32 divisors (see below), whose sum is σ = 5172390720. Its totient is φ = 492608448.

The previous prime is 2001222151. The next prime is 2001222221. The reversal of 2001222210 is 122221002.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2565280 + ... + 2566059.

It is an arithmetic number, because the mean of its divisors is an integer number (161637210).

Almost surely, 2^2001222210 is an apocalyptic number.

2001222210 is an abundant number, since it is smaller than the sum of its proper divisors (3171168510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001222210 is a wasteful number, since it uses less digits than its factorization.

2001222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131362.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2001222210 is about 44735.0221862022. The cubic root of 2001222210 is about 1260.1776456507.

Adding to 2001222210 its reverse (122221002), we get a palindrome (2123443212).

The spelling of 2001222210 in words is "two billion, one million, two hundred twenty-two thousand, two hundred ten".