11221213343 has 4 divisors (see below), whose sum is σ = 11709092208. Its totient is φ = 10733334480.

The previous prime is 11221213301. The next prime is 11221213391. The reversal of 11221213343 is 34331212211.

11221213343 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 an emirpimes, since its reverse is a distinct semiprime: 34331212211 = 155719 ⋅220469.

It is a cyclic number.

It is not a de Polignac number, because 11221213343 - 2¹⁰ = 11221212319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 487878841 = 11221213343 / (1 + 1 + 2 + 2 + 1 + 2 + 1 + 3 + 3 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221213243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243939398 + ... + 243939443.

It is an arithmetic number, because the mean of its divisors is an integer number (2927273052).

Almost surely, 2^11221213343 is an apocalyptic number.

11221213343 is a deficient number, since it is larger than the sum of its proper divisors (487878865).

11221213343 is an equidigital number, since it uses as much as digits as its factorization.

11221213343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487878864.

The product of its digits is 864, while the sum is 23.

Adding to 11221213343 its reverse (34331212211), we get a palindrome (45552425554).

The spelling of 11221213343 in words is "eleven billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred forty-three".