11213133 has 4 divisors (see below), whose sum is σ = 14950848. Its totient is φ = 7475420.

The previous prime is 11213129. The next prime is 11213141. The reversal of 11213133 is 33131211.

11213133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 33131211 = 3 ⋅11043737.

It is a cyclic number.

It is not a de Polignac number, because 11213133 - 2² = 11213129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213113) 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, 1868853 + ... + 1868858.

It is an arithmetic number, because the mean of its divisors is an integer number (3737712).

Almost surely, 2^11213133 is an apocalyptic number.

It is an amenable number.

11213133 is a deficient number, since it is larger than the sum of its proper divisors (3737715).

11213133 is an equidigital number, since it uses as much as digits as its factorization.

11213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737714.

The product of its digits is 54, while the sum is 15.

The square root of 11213133 is about 3348.6016484497. The cubic root of 11213133 is about 223.8252051017.

Adding to 11213133 its reverse (33131211), we get a palindrome (44344344).

The spelling of 11213133 in words is "eleven million, two hundred thirteen thousand, one hundred thirty-three".