1111200011 has 4 divisors (see below), whose sum is σ = 1111435512. Its totient is φ = 1110964512.

The previous prime is 1111200001. The next prime is 1111200037. The reversal of 1111200011 is 1100021111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1100021111 = 7 ⋅157145873.

It is a cyclic number.

It is not a de Polignac number, because 1111200011 - 2¹⁰ = 1111198987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111200001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 110525 + ... + 120158.

It is an arithmetic number, because the mean of its divisors is an integer number (277858878).

Almost surely, 2^1111200011 is an apocalyptic number.

1111200011 is a deficient number, since it is larger than the sum of its proper divisors (235501).

1111200011 is an equidigital number, since it uses as much as digits as its factorization.

1111200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235500.

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

The square root of 1111200011 is about 33334.6668049945. Note that the first 3 decimals coincide. The cubic root of 1111200011 is about 1035.7717911771.

Adding to 1111200011 its reverse (1100021111), we get a palindrome (2211221122).

The spelling of 1111200011 in words is "one billion, one hundred eleven million, two hundred thousand, eleven".