2001222110 has 8 divisors (see below), whose sum is σ = 3602199816. Its totient is φ = 800488840.

The previous prime is 2001222103. The next prime is 2001222127. The reversal of 2001222110 is 112221002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2001222091 and 2001222100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100061096 + ... + 100061115.

It is an arithmetic number, because the mean of its divisors is an integer number (450274977).

Almost surely, 2^2001222110 is an apocalyptic number.

2001222110 is a deficient number, since it is larger than the sum of its proper divisors (1600977706).

2001222110 is a wasteful number, since it uses less digits than its factorization.

2001222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200122218.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2001222110 is about 44735.0210685096. The cubic root of 2001222110 is about 1260.1776246606.

Adding to 2001222110 its reverse (112221002), we get a palindrome (2113443112).

The spelling of 2001222110 in words is "two billion, one million, two hundred twenty-two thousand, one hundred ten".