1133265621 has 16 divisors (see below), whose sum is σ = 1593907200. Its totient is φ = 714235248.

The previous prime is 1133265619. The next prime is 1133265629. The reversal of 1133265621 is 1265623311.

It is not a de Polignac number, because 1133265621 - 2¹ = 1133265619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133265629) 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 15 ways as a sum of consecutive naturals, for example, 6550 + ... + 48056.

It is an arithmetic number, because the mean of its divisors is an integer number (99619200).

Almost surely, 2^1133265621 is an apocalyptic number.

It is an amenable number.

1133265621 is a deficient number, since it is larger than the sum of its proper divisors (460641579).

1133265621 is a wasteful number, since it uses less digits than its factorization.

1133265621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42008.

The product of its digits is 6480, while the sum is 30.

The square root of 1133265621 is about 33664.0107681779. The cubic root of 1133265621 is about 1042.5828371857.

Adding to 1133265621 its reverse (1265623311), we get a palindrome (2398888932).

The spelling of 1133265621 in words is "one billion, one hundred thirty-three million, two hundred sixty-five thousand, six hundred twenty-one".