111421888 has 28 divisors (see below), whose sum is σ = 221513400. Its totient is φ = 55607552.

The previous prime is 111421879. The next prime is 111421889. The reversal of 111421888 is 888124111.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111421889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42438 + ... + 44986.

Almost surely, 2^111421888 is an apocalyptic number.

It is an amenable number.

111421888 is a deficient number, since it is larger than the sum of its proper divisors (110091512).

111421888 is an equidigital number, since it uses as much as digits as its factorization.

111421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244 (or 3234 counting only the distinct ones).

The product of its digits is 4096, while the sum is 34.

The square root of 111421888 is about 10555.6566825565. The cubic root of 111421888 is about 481.1976573645.

Adding to 111421888 its reverse (888124111), we get a palindrome (999545999).

The spelling of 111421888 in words is "one hundred eleven million, four hundred twenty-one thousand, eight hundred eighty-eight".