21302102203 has 8 divisors (see below), whose sum is σ = 21544860240. Its totient is φ = 21059968800.

The previous prime is 21302102117. The next prime is 21302102209. The reversal of 21302102203 is 30220120312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21302102203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302102209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87393 + ... + 224146.

It is an arithmetic number, because the mean of its divisors is an integer number (2693107530).

Almost surely, 2^21302102203 is an apocalyptic number.

21302102203 is a deficient number, since it is larger than the sum of its proper divisors (242758037).

21302102203 is a wasteful number, since it uses less digits than its factorization.

21302102203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312317.

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

Adding to 21302102203 its reverse (30220120312), we get a palindrome (51522222515).

The spelling of 21302102203 in words is "twenty-one billion, three hundred two million, one hundred two thousand, two hundred three".