1200001103 has 16 divisors (see below), whose sum is σ = 1477226496. Its totient is φ = 952110720.

The previous prime is 1200001097. The next prime is 1200001123. The reversal of 1200001103 is 3011000021.

It is a cyclic number.

It is not a de Polignac number, because 1200001103 - 2⁴ = 1200001087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200001123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115226 + ... + 125207.

It is an arithmetic number, because the mean of its divisors is an integer number (92326656).

Almost surely, 2^1200001103 is an apocalyptic number.

1200001103 is a deficient number, since it is larger than the sum of its proper divisors (277225393).

1200001103 is a wasteful number, since it uses less digits than its factorization.

1200001103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240494.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1200001103 is about 34641.0320718076. The cubic root of 1200001103 is about 1062.6588947693.

Adding to 1200001103 its reverse (3011000021), we get a palindrome (4211001124).

The spelling of 1200001103 in words is "one billion, two hundred million, one thousand, one hundred three".