11232421 has 4 divisors (see below), whose sum is σ = 11243500. Its totient is φ = 11221344.

The previous prime is 11232409. The next prime is 11232433. The reversal of 11232421 is 12423211.

11232421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (11232409) and next prime (11232433).

It can be written as a sum of positive squares in 2 ways, for example, as 2464900 + 8767521 = 1570^2 + 2961^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232421 - 2⁷ = 11232293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11232395 and 11232404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11232521) 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, 3846 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (2810875).

Almost surely, 2^11232421 is an apocalyptic number.

It is an amenable number.

11232421 is a deficient number, since it is larger than the sum of its proper divisors (11079).

11232421 is an equidigital number, since it uses as much as digits as its factorization.

11232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11078.

The product of its digits is 96, while the sum is 16.

The square root of 11232421 is about 3351.4804191581. The cubic root of 11232421 is about 223.9534674282.

Adding to 11232421 its reverse (12423211), we get a palindrome (23655632).

The spelling of 11232421 in words is "eleven million, two hundred thirty-two thousand, four hundred twenty-one".