2001220011222 has 32 divisors (see below), whose sum is σ = 4022808827904. Its totient is φ = 663682538400.

The previous prime is 2001220011199. The next prime is 2001220011233. The reversal of 2001220011222 is 2221100221002.

It is a congruent number.

It is an unprimeable number.

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, 1504072 + ... + 2502932.

It is an arithmetic number, because the mean of its divisors is an integer number (125712775872).

Almost surely, 2^{2001220011222} is an apocalyptic number.

2001220011222 is an abundant number, since it is smaller than the sum of its proper divisors (2021588816682).

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

2001220011222 is a wasteful number, since it uses less digits than its factorization.

2001220011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000564.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2001220011222 its reverse (2221100221002), we get a palindrome (4222320232224).

The spelling of 2001220011222 in words is "two trillion, one billion, two hundred twenty million, eleven thousand, two hundred twenty-two".