111323123221 has 8 divisors (see below), whose sum is σ = 121673850624. Its totient is φ = 101394874560.

The previous prime is 111323123209. The next prime is 111323123237. The reversal of 111323123221 is 122321323111.

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 111323123221 - 2⁵ = 111323123189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111323123192 and 111323123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111323123521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105619135 + ... + 105620188.

It is an arithmetic number, because the mean of its divisors is an integer number (15209231328).

Almost surely, 2^111323123221 is an apocalyptic number.

It is an amenable number.

111323123221 is a deficient number, since it is larger than the sum of its proper divisors (10350727403).

111323123221 is a wasteful number, since it uses less digits than its factorization.

111323123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211239371.

The product of its digits is 432, while the sum is 22.

Adding to 111323123221 its reverse (122321323111), we get a palindrome (233644446332).

The spelling of 111323123221 in words is "one hundred eleven billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred twenty-one".