1121020303 has 8 divisors (see below), whose sum is σ = 1210008800. Its totient is φ = 1032425568.

The previous prime is 1121020297. The next prime is 1121020321. The reversal of 1121020303 is 3030201211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121020303 - 2²⁵ = 1087465871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121020343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92508 + ... + 103921.

It is an arithmetic number, because the mean of its divisors is an integer number (151251100).

Almost surely, 2^1121020303 is an apocalyptic number.

1121020303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1121020303 is a deficient number, since it is larger than the sum of its proper divisors (88988497).

1121020303 is a wasteful number, since it uses less digits than its factorization.

1121020303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196881.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1121020303 is about 33481.6412829479. The cubic root of 1121020303 is about 1038.8140768791.

Adding to 1121020303 its reverse (3030201211), we get a palindrome (4151221514).

It can be divided in two parts, 11210 and 20303, that added together give a palindrome (31513).

The spelling of 1121020303 in words is "one billion, one hundred twenty-one million, twenty thousand, three hundred three".