21316102 has 8 divisors (see below), whose sum is σ = 33076800. Its totient is φ = 10290504.

The previous prime is 21316091. The next prime is 21316109. The reversal of 21316102 is 20161312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21316109) 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, 183702 + ... + 183817.

It is an arithmetic number, because the mean of its divisors is an integer number (4134600).

Almost surely, 2^21316102 is an apocalyptic number.

21316102 is a deficient number, since it is larger than the sum of its proper divisors (11760698).

21316102 is a wasteful number, since it uses less digits than its factorization.

21316102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367550.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 21316102 is about 4616.9364301450. The cubic root of 21316102 is about 277.2698175063.

Adding to 21316102 its reverse (20161312), we get a palindrome (41477414).

The spelling of 21316102 in words is "twenty-one million, three hundred sixteen thousand, one hundred two".