11122221213 has 40 divisors (see below), whose sum is σ = 16877931840. Its totient is φ = 7297698240.

The previous prime is 11122221211. The next prime is 11122221247. The reversal of 11122221213 is 31212222111.

It is not a de Polignac number, because 11122221213 - 2¹ = 11122221211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122221211) 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 39 ways as a sum of consecutive naturals, for example, 4248681 + ... + 4251297.

It is an arithmetic number, because the mean of its divisors is an integer number (421948296).

Almost surely, 2^11122221213 is an apocalyptic number.

It is an amenable number.

11122221213 is a deficient number, since it is larger than the sum of its proper divisors (5755710627).

11122221213 is an equidigital number, since it uses as much as digits as its factorization.

11122221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439 (or 3430 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11122221213 its reverse (31212222111), we get a palindrome (42334443324).

The spelling of 11122221213 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred thirteen".