21300302 has 4 divisors (see below), whose sum is σ = 31950456. Its totient is φ = 10650150.

The previous prime is 21300289. The next prime is 21300319. The reversal of 21300302 is 20300312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325074 + ... + 5325077.

It is an arithmetic number, because the mean of its divisors is an integer number (7987614).

Almost surely, 2^21300302 is an apocalyptic number.

21300302 is a deficient number, since it is larger than the sum of its proper divisors (10650154).

21300302 is a wasteful number, since it uses less digits than its factorization.

21300302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650153.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 21300302 is about 4615.2250215997. The cubic root of 21300302 is about 277.2012942531.

Adding to 21300302 its reverse (20300312), we get a palindrome (41600614).

The spelling of 21300302 in words is "twenty-one million, three hundred thousand, three hundred two".