2001222010 has 8 divisors (see below), whose sum is σ = 3602199636. Its totient is φ = 800488800.

The previous prime is 2001222001. The next prime is 2001222011. The reversal of 2001222010 is 102221002.

It can be written as a sum of positive squares in 2 ways, for example, as 1815526881 + 185695129 = 42609^2 + 13627^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 200122201 = 2001222010 / (2 + 0 + 0 + 1 + 2 + 2 + 2 + 0 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (2001222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100061091 + ... + 100061110.

Almost surely, 2^2001222010 is an apocalyptic number.

2001222010 is a deficient number, since it is larger than the sum of its proper divisors (1600977626).

2001222010 is a wasteful number, since it uses less digits than its factorization.

2001222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200122208.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001222010 is about 44735.0199508171. The cubic root of 2001222010 is about 1260.1776036704.

Adding to 2001222010 its reverse (102221002), we get a palindrome (2103443012).

The spelling of 2001222010 in words is "two billion, one million, two hundred twenty-two thousand, ten".