1133312221 has 4 divisors (see below), whose sum is σ = 1143904032. Its totient is φ = 1122720412.

The previous prime is 1133312203. The next prime is 1133312231. The reversal of 1133312221 is 1222133311.

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 1133312221 - 2¹⁷ = 1133181149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133312231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5295745 + ... + 5295958.

It is an arithmetic number, because the mean of its divisors is an integer number (285976008).

Almost surely, 2^1133312221 is an apocalyptic number.

It is an amenable number.

1133312221 is a deficient number, since it is larger than the sum of its proper divisors (10591811).

1133312221 is a wasteful number, since it uses less digits than its factorization.

1133312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10591810.

The product of its digits is 216, while the sum is 19.

The square root of 1133312221 is about 33664.7028948720. The cubic root of 1133312221 is about 1042.5971273614.

Adding to 1133312221 its reverse (1222133311), we get a palindrome (2355445532).

The spelling of 1133312221 in words is "one billion, one hundred thirty-three million, three hundred twelve thousand, two hundred twenty-one".