21003043322 has 8 divisors (see below), whose sum is σ = 31705231476. Its totient is φ = 10434632832.

The previous prime is 21003043307. The next prime is 21003043343. The reversal of 21003043322 is 22334030012.

It can be written as a sum of positive squares in 2 ways, for example, as 20969646481 + 33396841 = 144809^2 + 5779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21003043322² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003043294 and 21003043303.

It is an unprimeable number.

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, 33444023 + ... + 33444650.

Almost surely, 2^21003043322 is an apocalyptic number.

21003043322 is a deficient number, since it is larger than the sum of its proper divisors (10702188154).

21003043322 is a wasteful number, since it uses less digits than its factorization.

21003043322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66888832.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21003043322 its reverse (22334030012), we get a palindrome (43337073334).

It can be divided in two parts, 210030 and 43322, that added together give a palindrome (253352).

The spelling of 21003043322 in words is "twenty-one billion, three million, forty-three thousand, three hundred twenty-two".