21303102 has 8 divisors (see below), whose sum is σ = 42606216. Its totient is φ = 7101032.

The previous prime is 21303059. The next prime is 21303109. The reversal of 21303102 is 20130312.

It is a happy number.

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

21303102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1775253 + ... + 1775264.

It is an arithmetic number, because the mean of its divisors is an integer number (5325777).

Almost surely, 2^21303102 is an apocalyptic number.

21303102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303102 is a wasteful number, since it uses less digits than its factorization.

21303102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550522.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 21303102 is about 4615.5283554540. The cubic root of 21303102 is about 277.2134400843.

Adding to 21303102 its reverse (20130312), we get a palindrome (41433414).

It can be divided in two parts, 2130310 and 2, that added together give a palindrome (2130312).

The spelling of 21303102 in words is "twenty-one million, three hundred three thousand, one hundred two".