21432220003 has 8 divisors (see below), whose sum is σ = 21944260800. Its totient is φ = 20920798248.

The previous prime is 21432219997. The next prime is 21432220087. The reversal of 21432220003 is 30002223412.

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

It is a cyclic number.

It is not a de Polignac number, because 21432220003 - 2⁵ = 21432219971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21432226003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84313 + ... + 223546.

It is an arithmetic number, because the mean of its divisors is an integer number (2743032600).

Almost surely, 2^21432220003 is an apocalyptic number.

21432220003 is a deficient number, since it is larger than the sum of its proper divisors (512040797).

21432220003 is a wasteful number, since it uses less digits than its factorization.

21432220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309521.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21432220003 its reverse (30002223412), we get a palindrome (51434443415).

The spelling of 21432220003 in words is "twenty-one billion, four hundred thirty-two million, two hundred twenty thousand, three".