111003421 has 4 divisors (see below), whose sum is σ = 117533052. Its totient is φ = 104473792.

The previous prime is 111003407. The next prime is 111003433. The reversal of 111003421 is 124300111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48372025 + 62631396 = 6955^2 + 7914^2 .

It is a cyclic number.

It is not a de Polignac number, because 111003421 - 2²¹ = 108906269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111003401) 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, 3264790 + ... + 3264823.

It is an arithmetic number, because the mean of its divisors is an integer number (29383263).

Almost surely, 2^111003421 is an apocalyptic number.

It is an amenable number.

111003421 is a deficient number, since it is larger than the sum of its proper divisors (6529631).

111003421 is an equidigital number, since it uses as much as digits as its factorization.

111003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529630.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111003421 is about 10535.8161050770. The cubic root of 111003421 is about 480.5944905476.

Adding to 111003421 its reverse (124300111), we get a palindrome (235303532).

The spelling of 111003421 in words is "one hundred eleven million, three thousand, four hundred twenty-one".