11221222113 has 16 divisors (see below), whose sum is σ = 17601917760. Its totient is φ = 7040766528.

The previous prime is 11221222073. The next prime is 11221222123. The reversal of 11221222113 is 31122212211.

It is not a de Polignac number, because 11221222113 - 2¹⁸ = 11220959969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12223095 + ... + 12224012.

It is an arithmetic number, because the mean of its divisors is an integer number (1100119860).

Almost surely, 2^11221222113 is an apocalyptic number.

It is an amenable number.

11221222113 is a deficient number, since it is larger than the sum of its proper divisors (6380695647).

11221222113 is a wasteful number, since it uses less digits than its factorization.

11221222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24447133 (or 24447127 counting only the distinct ones).

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

Adding to 11221222113 its reverse (31122212211), we get a palindrome (42343434324).

The spelling of 11221222113 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred thirteen".