21302203310 has 8 divisors (see below), whose sum is σ = 38343965976. Its totient is φ = 8520881320.

The previous prime is 21302203303. The next prime is 21302203313. The reversal of 21302203310 is 1330220312.

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

It is a super-2 number, since 2×21302203310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302203313) 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, 1065110156 + ... + 1065110175.

It is an arithmetic number, because the mean of its divisors is an integer number (4792995747).

Almost surely, 2^21302203310 is an apocalyptic number.

21302203310 is a deficient number, since it is larger than the sum of its proper divisors (17041762666).

21302203310 is a wasteful number, since it uses less digits than its factorization.

21302203310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130220338.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21302203310 its reverse (1330220312), we get a palindrome (22632423622).

The spelling of 21302203310 in words is "twenty-one billion, three hundred two million, two hundred three thousand, three hundred ten".