11233133213 has 4 divisors (see below), whose sum is σ = 11234384448. Its totient is φ = 11231881980.

The previous prime is 11233133173. The next prime is 11233133221. The reversal of 11233133213 is 31233133211.

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 11233133213 - 2²² = 11228938909 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 (11233130213) 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, 612053 + ... + 630138.

It is an arithmetic number, because the mean of its divisors is an integer number (2808596112).

Almost surely, 2^11233133213 is an apocalyptic number.

It is an amenable number.

11233133213 is a deficient number, since it is larger than the sum of its proper divisors (1251235).

11233133213 is an equidigital number, since it uses as much as digits as its factorization.

11233133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251234.

The product of its digits is 972, while the sum is 23.

Adding to 11233133213 its reverse (31233133211), we get a palindrome (42466266424).

The spelling of 11233133213 in words is "eleven billion, two hundred thirty-three million, one hundred thirty-three thousand, two hundred thirteen".