11112000000221 has 2 divisors, whose sum is σ = 11112000000222. Its totient is φ = 11112000000220.

The previous prime is 11112000000217. The next prime is 11112000000223. The reversal of 11112000000221 is 12200000021111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10824692208100 + 287307792121 = 3290090^2 + 536011^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112000000221 - 2² = 11112000000217 is a prime.

Together with 11112000000223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112000000223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556000000110 + 5556000000111.

It is an arithmetic number, because the mean of its divisors is an integer number (5556000000111).

Almost surely, 2^{11112000000221} is an apocalyptic number.

It is an amenable number.

11112000000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112000000221 is an equidigital number, since it uses as much as digits as its factorization.

11112000000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11112000000221 its reverse (12200000021111), we get a palindrome (23312000021332).

The spelling of 11112000000221 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one", and thus it is an aban number.