111223410221 has 32 divisors (see below), whose sum is σ = 140472880128. Its totient is φ = 85541639040.

The previous prime is 111223410209. The next prime is 111223410229. The reversal of 111223410221 is 122014322111.

It is not a de Polignac number, because 111223410221 - 2⁶ = 111223410157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111223410193 and 111223410202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111223410229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7169345 + ... + 7184841.

It is an arithmetic number, because the mean of its divisors is an integer number (4389777504).

Almost surely, 2^111223410221 is an apocalyptic number.

111223410221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111223410221 is a deficient number, since it is larger than the sum of its proper divisors (29249469907).

111223410221 is a wasteful number, since it uses less digits than its factorization.

111223410221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16721.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 111223410221 its reverse (122014322111), we get a palindrome (233237732332).

The spelling of 111223410221 in words is "one hundred eleven billion, two hundred twenty-three million, four hundred ten thousand, two hundred twenty-one".