21022323003 has 12 divisors (see below), whose sum is σ = 33126084888. Its totient is φ = 12740801760.

The previous prime is 21022323001. The next prime is 21022323031. The reversal of 21022323003 is 30032322012.

It is a happy number.

21022323003 is a `hidden beast` number, since 210 + 223 + 230 + 0 + 3 = 666.

It is not a de Polignac number, because 21022323003 - 2¹ = 21022323001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022323001) 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 11 ways as a sum of consecutive naturals, for example, 106173250 + ... + 106173447.

It is an arithmetic number, because the mean of its divisors is an integer number (2760507074).

Almost surely, 2^21022323003 is an apocalyptic number.

21022323003 is a deficient number, since it is larger than the sum of its proper divisors (12103761885).

21022323003 is a wasteful number, since it uses less digits than its factorization.

21022323003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212346714 (or 212346711 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21022323003 its reverse (30032322012), we get a palindrome (51054645015).

Subtracting 21022323003 from its reverse (30032322012), we obtain a palindrome (9009999009).

The spelling of 21022323003 in words is "twenty-one billion, twenty-two million, three hundred twenty-three thousand, three".