1133432221 has 4 divisors (see below), whose sum is σ = 1136287612. Its totient is φ = 1130576832.

The previous prime is 1133432219. The next prime is 1133432231. The reversal of 1133432221 is 1222343311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222343311 = 7 ⋅174620473.

It can be written as a sum of positive squares in 2 ways, for example, as 572405625 + 561026596 = 23925^2 + 23686^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133432221 - 2¹ = 1133432219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133432192 and 1133432201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133432231) 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, 1427100 + ... + 1427893.

It is an arithmetic number, because the mean of its divisors is an integer number (284071903).

Almost surely, 2^1133432221 is an apocalyptic number.

It is an amenable number.

1133432221 is a deficient number, since it is larger than the sum of its proper divisors (2855391).

1133432221 is an equidigital number, since it uses as much as digits as its factorization.

1133432221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855390.

The product of its digits is 864, while the sum is 22.

The square root of 1133432221 is about 33666.4851298736. The cubic root of 1133432221 is about 1042.6339242938.

Adding to 1133432221 its reverse (1222343311), we get a palindrome (2355775532).

The spelling of 1133432221 in words is "one billion, one hundred thirty-three million, four hundred thirty-two thousand, two hundred twenty-one".