21314210 has 16 divisors (see below), whose sum is σ = 38598336. Its totient is φ = 8473968.

The previous prime is 21314207. The next prime is 21314221. The reversal of 21314210 is 1241312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4712 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (2412396).

Almost surely, 2^21314210 is an apocalyptic number.

21314210 is a deficient number, since it is larger than the sum of its proper divisors (17284126).

21314210 is a wasteful number, since it uses less digits than its factorization.

21314210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12937.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21314210 is about 4616.7315278236. The cubic root of 21314210 is about 277.2616138485.

Adding to 21314210 its reverse (1241312), we get a palindrome (22555522).

The spelling of 21314210 in words is "twenty-one million, three hundred fourteen thousand, two hundred ten".