11121332213 has 4 divisors (see below), whose sum is σ = 11125842720. Its totient is φ = 11116821708.

The previous prime is 11121332207. The next prime is 11121332251. The reversal of 11121332213 is 31223312111.

It is a happy number.

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 11121332213 - 2⁸ = 11121331957 is a prime.

It is a super-2 number, since 2×11121332213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121332413) 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, 2251553 + ... + 2256486.

It is an arithmetic number, because the mean of its divisors is an integer number (2781460680).

Almost surely, 2^11121332213 is an apocalyptic number.

It is an amenable number.

11121332213 is a deficient number, since it is larger than the sum of its proper divisors (4510507).

11121332213 is an equidigital number, since it uses as much as digits as its factorization.

11121332213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510506.

The product of its digits is 216, while the sum is 20.

Adding to 11121332213 its reverse (31223312111), we get a palindrome (42344644324).

The spelling of 11121332213 in words is "eleven billion, one hundred twenty-one million, three hundred thirty-two thousand, two hundred thirteen".