2001222102 has 32 divisors (see below), whose sum is σ = 4369521024. Its totient is φ = 605984000.

The previous prime is 2001222089. The next prime is 2001222103. The reversal of 2001222102 is 2012221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222103) 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 15 ways as a sum of consecutive naturals, for example, 85318 + ... + 106214.

It is an arithmetic number, because the mean of its divisors is an integer number (136547532).

Almost surely, 2^2001222102 is an apocalyptic number.

2001222102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001222102 is an abundant number, since it is smaller than the sum of its proper divisors (2368298922).

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

2001222102 is a wasteful number, since it uses less digits than its factorization.

2001222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22364.

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

The square root of 2001222102 is about 44735.0209790942. The cubic root of 2001222102 is about 1260.1776229814.

Adding to 2001222102 its reverse (2012221002), we get a palindrome (4013443104).

The spelling of 2001222102 in words is "two billion, one million, two hundred twenty-two thousand, one hundred two".