111223032121 has 8 divisors (see below), whose sum is σ = 113940354024. Its totient is φ = 108505927680.

The previous prime is 111223032079. The next prime is 111223032131. The reversal of 111223032121 is 121230322111.

It can be written as a sum of positive squares in 4 ways, for example, as 1619660025 + 109603372096 = 40245^2 + 331064^2 .

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 111223032121 - 2²⁵ = 111189477689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111223032131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557225 + ... + 1627081.

It is an arithmetic number, because the mean of its divisors is an integer number (14242544253).

Almost surely, 2^111223032121 is an apocalyptic number.

It is an amenable number.

111223032121 is a deficient number, since it is larger than the sum of its proper divisors (2717321903).

111223032121 is an equidigital number, since it uses as much as digits as its factorization.

111223032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108731.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111223032121 its reverse (121230322111), we get a palindrome (232453354232).

The spelling of 111223032121 in words is "one hundred eleven billion, two hundred twenty-three million, thirty-two thousand, one hundred twenty-one".