2001201212112 has 40 divisors (see below), whose sum is σ = 5170262013600. Its totient is φ = 667003559040.

The previous prime is 2001201212099. The next prime is 2001201212113. The reversal of 2001201212112 is 2112121021002.

It is a junction number, because it is equal to n+sod(n) for n = 2001201212091 and 2001201212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001201212113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473987 + ... + 2484962.

It is an arithmetic number, because the mean of its divisors is an integer number (129256550340).

Almost surely, 2^{2001201212112} is an apocalyptic number.

It is an amenable number.

2001201212112 is an abundant number, since it is smaller than the sum of its proper divisors (3169060801488).

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

2001201212112 is a wasteful number, since it uses less digits than its factorization.

2001201212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969491 (or 3969485 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001201212112 its reverse (2112121021002), we get a palindrome (4113322233114).

The spelling of 2001201212112 in words is "two trillion, one billion, two hundred one million, two hundred twelve thousand, one hundred twelve".