1200111110003 has 32 divisors (see below), whose sum is σ = 1389063427584. Its totient is φ = 1028764800000.

The previous prime is 1200111109993. The next prime is 1200111110021. The reversal of 1200111110003 is 3000111110021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1200111110003 - 2²⁰ = 1200110061427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200111119003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412553 + ... + 1603253.

It is an arithmetic number, because the mean of its divisors is an integer number (43408232112).

Almost surely, 2^{1200111110003} is an apocalyptic number.

1200111110003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1200111110003 is a deficient number, since it is larger than the sum of its proper divisors (188952317581).

1200111110003 is a wasteful number, since it uses less digits than its factorization.

1200111110003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190847.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1200111110003 its reverse (3000111110021), we get a palindrome (4200222220024).

The spelling of 1200111110003 in words is "one trillion, two hundred billion, one hundred eleven million, one hundred ten thousand, three".