2011200121206 has 40 divisors (see below), whose sum is σ = 4611382206024. Its totient is φ = 654809339520.

The previous prime is 2011200121199. The next prime is 2011200121223. The reversal of 2011200121206 is 6021210021102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 144351355 + ... + 144365286.

Almost surely, 2^{2011200121206} is an apocalyptic number.

2011200121206 is an abundant number, since it is smaller than the sum of its proper divisors (2600182084818).

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

2011200121206 is a wasteful number, since it uses less digits than its factorization.

2011200121206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288716698 (or 288716689 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2011200121206 its reverse (6021210021102), we get a palindrome (8032410142308).

The spelling of 2011200121206 in words is "two trillion, eleven billion, two hundred million, one hundred twenty-one thousand, two hundred six".