1121053203 has 40 divisors (see below), whose sum is σ = 1744578000. Its totient is φ = 716530752.

The previous prime is 1121053183. The next prime is 1121053211. The reversal of 1121053203 is 3023501211.

It is not a de Polignac number, because 1121053203 - 2²⁵ = 1087498771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121052203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 348400 + ... + 351602.

It is an arithmetic number, because the mean of its divisors is an integer number (43614450).

Almost surely, 2^1121053203 is an apocalyptic number.

1121053203 is a deficient number, since it is larger than the sum of its proper divisors (623524797).

1121053203 is a wasteful number, since it uses less digits than its factorization.

1121053203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393 (or 3384 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1121053203 is about 33482.1325933699. The cubic root of 1121053203 is about 1038.8242392430.

Adding to 1121053203 its reverse (3023501211), we get a palindrome (4144554414).

The spelling of 1121053203 in words is "one billion, one hundred twenty-one million, fifty-three thousand, two hundred three".