11321022421 has 4 divisors (see below), whose sum is σ = 11321403232. Its totient is φ = 11320641612.

The previous prime is 11321022403. The next prime is 11321022437. The reversal of 11321022421 is 12422012311.

11321022421 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11321022421 - 2⁵ = 11321022389 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 (11321022451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141651 + ... + 206656.

It is an arithmetic number, because the mean of its divisors is an integer number (2830350808).

Almost surely, 2^11321022421 is an apocalyptic number.

It is an amenable number.

11321022421 is a deficient number, since it is larger than the sum of its proper divisors (380811).

11321022421 is an equidigital number, since it uses as much as digits as its factorization.

11321022421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380810.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11321022421 its reverse (12422012311), we get a palindrome (23743034732).

The spelling of 11321022421 in words is "eleven billion, three hundred twenty-one million, twenty-two thousand, four hundred twenty-one".