11110212221 has 8 divisors (see below), whose sum is σ = 11305503744. Its totient is φ = 10915787520.

The previous prime is 11110212199. The next prime is 11110212227. The reversal of 11110212221 is 12221201111.

11110212221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-11110212221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110212196 and 11110212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110212227) 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 7 ways as a sum of consecutive naturals, for example, 190820 + ... + 242141.

It is an arithmetic number, because the mean of its divisors is an integer number (1413187968).

Almost surely, 2^11110212221 is an apocalyptic number.

It is an amenable number.

11110212221 is a deficient number, since it is larger than the sum of its proper divisors (195291523).

11110212221 is an equidigital number, since it uses as much as digits as its factorization.

11110212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433411.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11110212221 its reverse (12221201111), we get a palindrome (23331413332).

The spelling of 11110212221 in words is "eleven billion, one hundred ten million, two hundred twelve thousand, two hundred twenty-one".