111220022221 has 8 divisors (see below), whose sum is σ = 138663923904. Its totient is φ = 86664952320.

The previous prime is 111220022209. The next prime is 111220022297. The reversal of 111220022221 is 122220022111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111220022221 - 2¹⁷ = 111219891149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111220022195 and 111220022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220022521) 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 7 ways as a sum of consecutive naturals, for example, 722207860 + ... + 722208013.

It is an arithmetic number, because the mean of its divisors is an integer number (17332990488).

Almost surely, 2^111220022221 is an apocalyptic number.

111220022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111220022221 is a deficient number, since it is larger than the sum of its proper divisors (27443901683).

111220022221 is a wasteful number, since it uses less digits than its factorization.

111220022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444415891.

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

Adding to 111220022221 its reverse (122220022111), we get a palindrome (233440044332).

The spelling of 111220022221 in words is "one hundred eleven billion, two hundred twenty million, twenty-two thousand, two hundred twenty-one".