201111100001200 has 30 divisors (see below), whose sum is σ = 483169417753844. Its totient is φ = 80444440000320.

The previous prime is 201111100001173. The next prime is 201111100001221. The reversal of 201111100001200 is 2100001111102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251388874602 + ... + 251388875401.

Almost surely, 2^{201111100001200} is an apocalyptic number.

201111100001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111100001200 is an abundant number, since it is smaller than the sum of its proper divisors (282058317752644).

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

201111100001200 is a wasteful number, since it uses less digits than its factorization.

201111100001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502777750021 (or 502777750010 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201111100001200 its reverse (2100001111102), we get a palindrome (203211101112302).

The spelling of 201111100001200 in words is "two hundred one trillion, one hundred eleven billion, one hundred million, one thousand, two hundred".