11113202221 has 8 divisors (see below), whose sum is σ = 12236798304. Its totient is φ = 10008490320.

The previous prime is 11113202203. The next prime is 11113202227. The reversal of 11113202221 is 12220231111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11113202221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11113202195 and 11113202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113202227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4719810 + ... + 4722163.

It is an arithmetic number, because the mean of its divisors is an integer number (1529599788).

Almost surely, 2^11113202221 is an apocalyptic number.

11113202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11113202221 is a deficient number, since it is larger than the sum of its proper divisors (1123596083).

11113202221 is a wasteful number, since it uses less digits than its factorization.

11113202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9442091.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11113202221 its reverse (12220231111), we get a palindrome (23333433332).

The spelling of 11113202221 in words is "eleven billion, one hundred thirteen million, two hundred two thousand, two hundred twenty-one".