10401243321 has 16 divisors (see below), whose sum is σ = 16683699200. Its totient is φ = 5630748048.

The previous prime is 10401243311. The next prime is 10401243337. The reversal of 10401243321 is 12334210401.

It is not a de Polignac number, because 10401243321 - 2¹⁸ = 10400981177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (10401243311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13033741 + ... + 13034538.

It is an arithmetic number, because the mean of its divisors is an integer number (1042731200).

Almost surely, 2^10401243321 is an apocalyptic number.

It is an amenable number.

10401243321 is a deficient number, since it is larger than the sum of its proper divisors (6282455879).

10401243321 is a wasteful number, since it uses less digits than its factorization.

10401243321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26068308.

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

Adding to 10401243321 its reverse (12334210401), we get a palindrome (22735453722).

The spelling of 10401243321 in words is "ten billion, four hundred one million, two hundred forty-three thousand, three hundred twenty-one".