2001112222012 has 12 divisors (see below), whose sum is σ = 3502084617360. Its totient is φ = 1000516617056.

The previous prime is 2001112222001. The next prime is 2001112222013. The reversal of 2001112222012 is 2102222111002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001112222013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9759337 + ... + 9962272.

It is an arithmetic number, because the mean of its divisors is an integer number (291840384780).

Almost surely, 2^{2001112222012} is an apocalyptic number.

It is an amenable number.

2001112222012 is a deficient number, since it is larger than the sum of its proper divisors (1500972395348).

2001112222012 is a wasteful number, since it uses less digits than its factorization.

2001112222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19746980 (or 19746978 counting only the distinct ones).

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

Adding to 2001112222012 its reverse (2102222111002), we get a palindrome (4103334333014).

The spelling of 2001112222012 in words is "two trillion, one billion, one hundred twelve million, two hundred twenty-two thousand, twelve".