1321033133 has 4 divisors (see below), whose sum is σ = 1509752160. Its totient is φ = 1132314108.

The previous prime is 1321033123. The next prime is 1321033151. The reversal of 1321033133 is 3313301231.

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 1321033133 - 2⁴ = 1321033117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321033123) 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, 94359503 + ... + 94359516.

It is an arithmetic number, because the mean of its divisors is an integer number (377438040).

Almost surely, 2^1321033133 is an apocalyptic number.

It is an amenable number.

1321033133 is a deficient number, since it is larger than the sum of its proper divisors (188719027).

1321033133 is an equidigital number, since it uses as much as digits as its factorization.

1321033133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188719026.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1321033133 is about 36346.0194931990. The cubic root of 1321033133 is about 1097.2474244732.

Adding to 1321033133 its reverse (3313301231), we get a palindrome (4634334364).

The spelling of 1321033133 in words is "one billion, three hundred twenty-one million, thirty-three thousand, one hundred thirty-three".