21322303003 has 4 divisors (see below), whose sum is σ = 21323863120. Its totient is φ = 21320742888.

The previous prime is 21322302977. The next prime is 21322303021. The reversal of 21322303003 is 30030322312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21322303003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322303033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759375 + ... + 786952.

It is an arithmetic number, because the mean of its divisors is an integer number (5330965780).

Almost surely, 2^21322303003 is an apocalyptic number.

21322303003 is a deficient number, since it is larger than the sum of its proper divisors (1560117).

21322303003 is a wasteful number, since it uses less digits than its factorization.

21322303003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560116.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21322303003 its reverse (30030322312), we get a palindrome (51352625315).

The spelling of 21322303003 in words is "twenty-one billion, three hundred twenty-two million, three hundred three thousand, three".