1151223233 has 4 divisors (see below), whose sum is σ = 1151291328. Its totient is φ = 1151155140.

The previous prime is 1151223211. The next prime is 1151223239. The reversal of 1151223233 is 3323221511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3323221511 = 257 ⋅12930823.

It is a cyclic number.

It is not a de Polignac number, because 1151223233 - 2¹² = 1151219137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1151223199 and 1151223208.

It is not an unprimeable number, because it can be changed into a prime (1151223239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12788 + ... + 49658.

It is an arithmetic number, because the mean of its divisors is an integer number (287822832).

Almost surely, 2^1151223233 is an apocalyptic number.

It is an amenable number.

1151223233 is a deficient number, since it is larger than the sum of its proper divisors (68095).

1151223233 is an equidigital number, since it uses as much as digits as its factorization.

1151223233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68094.

The product of its digits is 1080, while the sum is 23.

The square root of 1151223233 is about 33929.6807087836. The cubic root of 1151223233 is about 1048.0608906529.

Adding to 1151223233 its reverse (3323221511), we get a palindrome (4474444744).

The spelling of 1151223233 in words is "one billion, one hundred fifty-one million, two hundred twenty-three thousand, two hundred thirty-three".