11111232213 has 8 divisors (see below), whose sum is σ = 16461084800. Its totient is φ = 7407488124.

The previous prime is 11111232199. The next prime is 11111232227. The reversal of 11111232213 is 31223211111.

It is an interprime number because it is at equal distance from previous prime (11111232199) and next prime (11111232227).

It is not a de Polignac number, because 11111232213 - 2⁶ = 11111232149 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 (11111232263) 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 7 ways as a sum of consecutive naturals, for example, 205763533 + ... + 205763586.

It is an arithmetic number, because the mean of its divisors is an integer number (2057635600).

Almost surely, 2^11111232213 is an apocalyptic number.

It is an amenable number.

11111232213 is a deficient number, since it is larger than the sum of its proper divisors (5349852587).

11111232213 is an equidigital number, since it uses as much as digits as its factorization.

11111232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411527128 (or 411527122 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11111232213 its reverse (31223211111), we get a palindrome (42334443324).

The spelling of 11111232213 in words is "eleven billion, one hundred eleven million, two hundred thirty-two thousand, two hundred thirteen".