111220022222 has 4 divisors (see below), whose sum is σ = 166830033336. Its totient is φ = 55610011110.

The previous prime is 111220022209. The next prime is 111220022297. The reversal of 111220022222 is 222220022111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222220022111 = 97 ⋅2290928063.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 111220022222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805005554 + ... + 27805005557.

It is an arithmetic number, because the mean of its divisors is an integer number (41707508334).

Almost surely, 2^111220022222 is an apocalyptic number.

111220022222 is a deficient number, since it is larger than the sum of its proper divisors (55610011114).

111220022222 is an equidigital number, since it uses as much as digits as its factorization.

111220022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55610011113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 111220022222 its reverse (222220022111), we get a palindrome (333440044333).

The spelling of 111220022222 in words is "one hundred eleven billion, two hundred twenty million, twenty-two thousand, two hundred twenty-two".