111200000221 has 4 divisors (see below), whose sum is σ = 111413436444. Its totient is φ = 110986564000.

The previous prime is 111200000189. The next prime is 111200000227. The reversal of 111200000221 is 122000002111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51013191321 + 60186808900 = 225861^2 + 245330^2 .

It is a cyclic number.

It is not a de Polignac number, because 111200000221 - 2⁵ = 111200000189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111200000198 and 111200000207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200000227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106717330 + ... + 106718371.

It is an arithmetic number, because the mean of its divisors is an integer number (27853359111).

Almost surely, 2^111200000221 is an apocalyptic number.

It is an amenable number.

111200000221 is a deficient number, since it is larger than the sum of its proper divisors (213436223).

111200000221 is an equidigital number, since it uses as much as digits as its factorization.

111200000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213436222.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111200000221 its reverse (122000002111), we get a palindrome (233200002332).

The spelling of 111200000221 in words is "one hundred eleven billion, two hundred million, two hundred twenty-one", and thus it is an aban number.