21003323422 has 32 divisors (see below), whose sum is σ = 32995123200. Its totient is φ = 10015579200.

The previous prime is 21003323417. The next prime is 21003323423. The reversal of 21003323422 is 22432330012.

It is a super-2 number, since 2×21003323422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003323393 and 21003323402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003323423) 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, 1709979 + ... + 1722217.

It is an arithmetic number, because the mean of its divisors is an integer number (1031097600).

Almost surely, 2^21003323422 is an apocalyptic number.

21003323422 is a deficient number, since it is larger than the sum of its proper divisors (11991799778).

21003323422 is a wasteful number, since it uses less digits than its factorization.

21003323422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21003323422 its reverse (22432330012), we get a palindrome (43435653434).

The spelling of 21003323422 in words is "twenty-one billion, three million, three hundred twenty-three thousand, four hundred twenty-two".