2001222112202 has 8 divisors (see below), whose sum is σ = 3019184805636. Its totient is φ = 994827176992.

The previous prime is 2001222112199. The next prime is 2001222112283. The reversal of 2001222112202 is 2022112221002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1458010365361 + 543211746841 = 1207481^2 + 737029^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891939123 + ... + 2891939814.

Almost surely, 2^{2001222112202} is an apocalyptic number.

2001222112202 is a deficient number, since it is larger than the sum of its proper divisors (1017962693434).

2001222112202 is a wasteful number, since it uses less digits than its factorization.

2001222112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783879112.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2001222112202 its reverse (2022112221002), we get a palindrome (4023334333204).

The spelling of 2001222112202 in words is "two trillion, one billion, two hundred twenty-two million, one hundred twelve thousand, two hundred two".