1133023121 has 4 divisors (see below), whose sum is σ = 1133878272. Its totient is φ = 1132167972.

The previous prime is 1133023117. The next prime is 1133023141. The reversal of 1133023121 is 1213203311.

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.

It is a cyclic number.

It is not a de Polignac number, because 1133023121 - 2² = 1133023117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1133023121.

It is not an unprimeable number, because it can be changed into a prime (1133023141) 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, 425585 + ... + 428238.

It is an arithmetic number, because the mean of its divisors is an integer number (283469568).

Almost surely, 2^1133023121 is an apocalyptic number.

It is an amenable number.

1133023121 is a deficient number, since it is larger than the sum of its proper divisors (855151).

1133023121 is an equidigital number, since it uses as much as digits as its factorization.

1133023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855150.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1133023121 is about 33660.4088061925. The cubic root of 1133023121 is about 1042.5084667501.

Adding to 1133023121 its reverse (1213203311), we get a palindrome (2346226432).

The spelling of 1133023121 in words is "one billion, one hundred thirty-three million, twenty-three thousand, one hundred twenty-one".