111424404221 has 8 divisors (see below), whose sum is σ = 120134568960. Its totient is φ = 102734104752.

The previous prime is 111424404211. The next prime is 111424404233. The reversal of 111424404221 is 122404424111.

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 111424404221 - 2¹⁸ = 111424142077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111424404211) 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, 4954661 + ... + 4977098.

It is an arithmetic number, because the mean of its divisors is an integer number (15016821120).

Almost surely, 2^111424404221 is an apocalyptic number.

It is an amenable number.

111424404221 is a deficient number, since it is larger than the sum of its proper divisors (8710164739).

111424404221 is an equidigital number, since it uses as much as digits as its factorization.

111424404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932635.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 111424404221 its reverse (122404424111), we get a palindrome (233828828332).

The spelling of 111424404221 in words is "one hundred eleven billion, four hundred twenty-four million, four hundred four thousand, two hundred twenty-one".