2001200212212 has 24 divisors (see below), whose sum is σ = 4688070623712. Its totient is φ = 664409100000.

The previous prime is 2001200212153. The next prime is 2001200212213. The reversal of 2001200212212 is 2122120021002.

It is a junction number, because it is equal to n+sod(n) for n = 2001200212191 and 2001200212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001200212213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332201539 + ... + 332207562.

It is an arithmetic number, because the mean of its divisors is an integer number (195336275988).

Almost surely, 2^{2001200212212} is an apocalyptic number.

It is an amenable number.

2001200212212 is an abundant number, since it is smaller than the sum of its proper divisors (2686870411500).

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

2001200212212 is a wasteful number, since it uses less digits than its factorization.

2001200212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664409359 (or 664409357 counting only the distinct ones).

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

Adding to 2001200212212 its reverse (2122120021002), we get a palindrome (4123320233214).

The spelling of 2001200212212 in words is "two trillion, one billion, two hundred million, two hundred twelve thousand, two hundred twelve".