111122000221 has 4 divisors (see below), whose sum is σ = 111140437500. Its totient is φ = 111103562944.

The previous prime is 111122000183. The next prime is 111122000263. The reversal of 111122000221 is 122000221111.

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 93128728900 + 17993271321 = 305170^2 + 134139^2 .

It is a cyclic number.

It is not a de Polignac number, because 111122000221 - 2²⁵ = 111088445789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122000021) 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, 9209596 + ... + 9221653.

It is an arithmetic number, because the mean of its divisors is an integer number (27785109375).

Almost surely, 2^111122000221 is an apocalyptic number.

It is an amenable number.

111122000221 is a deficient number, since it is larger than the sum of its proper divisors (18437279).

111122000221 is an equidigital number, since it uses as much as digits as its factorization.

111122000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18437278.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111122000221 its reverse (122000221111), we get a palindrome (233122221332).

It can be divided in two parts, 111 and 122000221, that multiplied together give a palindrome (13542024531).

The spelling of 111122000221 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.