2001220122112 has 40 divisors (see below), whose sum is σ = 4208980663800. Its totient is φ = 947946369024.

The previous prime is 2001220122107. The next prime is 2001220122127. The reversal of 2001220122112 is 2112210221002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 3 ways as a sum of consecutive naturals, for example, 102849037 + ... + 102868492.

It is an arithmetic number, because the mean of its divisors is an integer number (105224516595).

Almost surely, 2^{2001220122112} is an apocalyptic number.

It is an amenable number.

2001220122112 is an abundant number, since it is smaller than the sum of its proper divisors (2207760541688).

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

2001220122112 is an equidigital number, since it uses as much as digits as its factorization.

2001220122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205717566 (or 205717550 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2001220122112 its reverse (2112210221002), we get a palindrome (4113430343114).

The spelling of 2001220122112 in words is "two trillion, one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred twelve".