1151120203 has 4 divisors (see below), whose sum is σ = 1169991088. Its totient is φ = 1132249320.

The previous prime is 1151120189. The next prime is 1151120207. The reversal of 1151120203 is 3020211511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1151120203 - 2²⁹ = 614249291 is a prime.

It is a super-2 number, since 2×1151120203² = 2650155443509522418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151120207) 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, 9435351 + ... + 9435472.

It is an arithmetic number, because the mean of its divisors is an integer number (292497772).

Almost surely, 2^1151120203 is an apocalyptic number.

1151120203 is a deficient number, since it is larger than the sum of its proper divisors (18870885).

1151120203 is an equidigital number, since it uses as much as digits as its factorization.

1151120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18870884.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1151120203 is about 33928.1623876095. The cubic root of 1151120203 is about 1048.0296239295.

Adding to 1151120203 its reverse (3020211511), we get a palindrome (4171331714).

The spelling of 1151120203 in words is "one billion, one hundred fifty-one million, one hundred twenty thousand, two hundred three".