111002222221 has 16 divisors (see below), whose sum is σ = 123097621248. Its totient is φ = 99241387200.

The previous prime is 111002222213. The next prime is 111002222267. The reversal of 111002222221 is 122222200111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111002222221 - 2³ = 111002222213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002222195 and 111002222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002222021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8322460 + ... + 8335786.

It is an arithmetic number, because the mean of its divisors is an integer number (7693601328).

Almost surely, 2^111002222221 is an apocalyptic number.

111002222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111002222221 is a deficient number, since it is larger than the sum of its proper divisors (12095399027).

111002222221 is a wasteful number, since it uses less digits than its factorization.

111002222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25812.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111002222221 its reverse (122222200111), we get a palindrome (233224422332).

The spelling of 111002222221 in words is "one hundred eleven billion, two million, two hundred twenty-two thousand, two hundred twenty-one".