1121910203 has 4 divisors (see below), whose sum is σ = 1125903048. Its totient is φ = 1117917360.

The previous prime is 1121910199. The next prime is 1121910241. The reversal of 1121910203 is 3020191211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020191211 = 1163 ⋅2596897.

It is a cyclic number.

It is not a de Polignac number, because 1121910203 - 2² = 1121910199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121910103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1996001 + ... + 1996562.

It is an arithmetic number, because the mean of its divisors is an integer number (281475762).

Almost surely, 2^1121910203 is an apocalyptic number.

1121910203 is a deficient number, since it is larger than the sum of its proper divisors (3992845).

1121910203 is an equidigital number, since it uses as much as digits as its factorization.

1121910203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992844.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1121910203 is about 33494.9280190300. The cubic root of 1121910203 is about 1039.0888849077.

The spelling of 1121910203 in words is "one billion, one hundred twenty-one million, nine hundred ten thousand, two hundred three".