1105133221 has 4 divisors (see below), whose sum is σ = 1105207744. Its totient is φ = 1105058700.

The previous prime is 1105133219. The next prime is 1105133251. The reversal of 1105133221 is 1223315011.

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.

It is a cyclic number.

It is not a de Polignac number, because 1105133221 - 2¹ = 1105133219 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 (1105133251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6615 + ... + 47476.

It is an arithmetic number, because the mean of its divisors is an integer number (276301936).

Almost surely, 2^1105133221 is an apocalyptic number.

It is an amenable number.

1105133221 is a deficient number, since it is larger than the sum of its proper divisors (74523).

1105133221 is an equidigital number, since it uses as much as digits as its factorization.

1105133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74522.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1105133221 is about 33243.5440499355. The cubic root of 1105133221 is about 1033.8833580874.

Adding to 1105133221 its reverse (1223315011), we get a palindrome (2328448232).

The spelling of 1105133221 in words is "one billion, one hundred five million, one hundred thirty-three thousand, two hundred twenty-one".