111443144221 has 8 divisors (see below), whose sum is σ = 112378795200. Its totient is φ = 110509406400.

The previous prime is 111443144213. The next prime is 111443144243. The reversal of 111443144221 is 122441344111.

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 111443144221 - 2³ = 111443144213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111443144221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111443144201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361180 + ... + 594421.

It is an arithmetic number, because the mean of its divisors is an integer number (14047349400).

Almost surely, 2^111443144221 is an apocalyptic number.

It is an amenable number.

111443144221 is a deficient number, since it is larger than the sum of its proper divisors (935650979).

111443144221 is an equidigital number, since it uses as much as digits as its factorization.

111443144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956579.

The product of its digits is 3072, while the sum is 28.

Adding to 111443144221 its reverse (122441344111), we get a palindrome (233884488332).

The spelling of 111443144221 in words is "one hundred eleven billion, four hundred forty-three million, one hundred forty-four thousand, two hundred twenty-one".