2011121111200 has 72 divisors (see below), whose sum is σ = 5023827391968. Its totient is φ = 785740327680.

The previous prime is 2011121111171. The next prime is 2011121111333. The reversal of 2011121111200 is 21111211102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29197012 + ... + 29265811.

It is an arithmetic number, because the mean of its divisors is an integer number (69775380444).

Almost surely, 2^{2011121111200} is an apocalyptic number.

2011121111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011121111200 is an abundant number, since it is smaller than the sum of its proper divisors (3012706280768).

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

2011121111200 is a wasteful number, since it uses less digits than its factorization.

2011121111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58462886 (or 58462873 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011121111200 its reverse (21111211102), we get a palindrome (2032232322302).

The spelling of 2011121111200 in words is "two trillion, eleven billion, one hundred twenty-one million, one hundred eleven thousand, two hundred".