1111100001200 has 120 divisors (see below), whose sum is σ = 3230219940192. Its totient is φ = 358539816960.

The previous prime is 1111100001199. The next prime is 1111100001203. The reversal of 1111100001200 is 21000011111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (1111100001203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11623619 + ... + 11718818.

Almost surely, 2^{1111100001200} is an apocalyptic number.

1111100001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111100001200 is an abundant number, since it is smaller than the sum of its proper divisors (2119119938992).

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

1111100001200 is a wasteful number, since it uses less digits than its factorization.

1111100001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23342479 (or 23342468 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1111100001200 its reverse (21000011111), we get a palindrome (1132100012311).

The spelling of 1111100001200 in words is "one trillion, one hundred eleven billion, one hundred million, one thousand, two hundred".