1121200203 has 16 divisors (see below), whose sum is σ = 1580163200. Its totient is φ = 705179520.

The previous prime is 1121200163. The next prime is 1121200207. The reversal of 1121200203 is 3020021211.

It is not a de Polignac number, because 1121200203 - 2¹⁶ = 1121134667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121200207) 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, 27073 + ... + 54546.

It is an arithmetic number, because the mean of its divisors is an integer number (98760200).

Almost surely, 2^1121200203 is an apocalyptic number.

1121200203 is a deficient number, since it is larger than the sum of its proper divisors (458962997).

1121200203 is a wasteful number, since it uses less digits than its factorization.

1121200203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81882.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1121200203 is about 33484.3277220851. The cubic root of 1121200203 is about 1038.8696431211.

Adding to 1121200203 its reverse (3020021211), we get a palindrome (4141221414).

The spelling of 1121200203 in words is "one billion, one hundred twenty-one million, two hundred thousand, two hundred three".