2011200012 has 72 divisors (see below), whose sum is σ = 5233067840. Its totient is φ = 651006720.

The previous prime is 2011199969. The next prime is 2011200047. The reversal of 2011200012 is 2100021102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2011199967 and 2011200003.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167688 + ... + 179280.

Almost surely, 2^2011200012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011200012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616533920).

2011200012 is an abundant number, since it is smaller than the sum of its proper divisors (3221867828).

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

2011200012 is a wasteful number, since it uses less digits than its factorization.

2011200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11743 (or 11738 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2011200012 is about 44846.4046719467. The cubic root of 2011200012 is about 1262.2685285143.

Adding to 2011200012 its reverse (2100021102), we get a palindrome (4111221114).

The spelling of 2011200012 in words is "two billion, eleven million, two hundred thousand, twelve".