21320102203 has 8 divisors (see below), whose sum is σ = 22605635520. Its totient is φ = 20038058880.

The previous prime is 21320102189. The next prime is 21320102239. The reversal of 21320102203 is 30220102312.

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 21320102203 - 2⁵ = 21320102171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320102003) 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, 859908 + ... + 884353.

It is an arithmetic number, because the mean of its divisors is an integer number (2825704440).

Almost surely, 2^21320102203 is an apocalyptic number.

21320102203 is a deficient number, since it is larger than the sum of its proper divisors (1285533317).

21320102203 is a wasteful number, since it uses less digits than its factorization.

21320102203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744997.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21320102203 its reverse (30220102312), we get a palindrome (51540204515).

The spelling of 21320102203 in words is "twenty-one billion, three hundred twenty million, one hundred two thousand, two hundred three".