111111221002 has 8 divisors (see below), whose sum is σ = 166693427712. Its totient is φ = 55546745100.

The previous prime is 111111220951. The next prime is 111111221059. The reversal of 111111221002 is 200122111111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 4417024 + ... + 4442107.

It is an arithmetic number, because the mean of its divisors is an integer number (20836678464).

Almost surely, 2^111111221002 is an apocalyptic number.

111111221002 is a deficient number, since it is larger than the sum of its proper divisors (55582206710).

111111221002 is an equidigital number, since it uses as much as digits as its factorization.

111111221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865404.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111111221002 its reverse (200122111111), we get a palindrome (311233332113).

The spelling of 111111221002 in words is "one hundred eleven billion, one hundred eleven million, two hundred twenty-one thousand, two".