10421323221 has 16 divisors (see below), whose sum is σ = 14727740544. Its totient is φ = 6532076544.

The previous prime is 10421323219. The next prime is 10421323247. The reversal of 10421323221 is 12232312401.

10421323221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10421323221 - 2¹ = 10421323219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421323321) 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 15 ways as a sum of consecutive naturals, for example, 56340 + ... + 154973.

It is an arithmetic number, because the mean of its divisors is an integer number (920483784).

Almost surely, 2^10421323221 is an apocalyptic number.

It is an amenable number.

10421323221 is a deficient number, since it is larger than the sum of its proper divisors (4306417323).

10421323221 is a wasteful number, since it uses less digits than its factorization.

10421323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212300.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10421323221 its reverse (12232312401), we get a palindrome (22653635622).

The spelling of 10421323221 in words is "ten billion, four hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty-one".