11113421 has 8 divisors (see below), whose sum is σ = 12148704. Its totient is φ = 10082320.

The previous prime is 11113379. The next prime is 11113429. The reversal of 11113421 is 12431111.

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 11113421 - 2²² = 6919117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11113396 and 11113405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7850 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (1518588).

Almost surely, 2^11113421 is an apocalyptic number.

11113421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11113421 is a deficient number, since it is larger than the sum of its proper divisors (1035283).

11113421 is a wasteful number, since it uses less digits than its factorization.

11113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091.

The product of its digits is 24, while the sum is 14.

The square root of 11113421 is about 3333.6797986609. The cubic root of 11113421 is about 223.1597787800.

Adding to 11113421 its reverse (12431111), we get a palindrome (23544532).

The spelling of 11113421 in words is "eleven million, one hundred thirteen thousand, four hundred twenty-one".