21327110 has 32 divisors (see below), whose sum is σ = 44236800. Its totient is φ = 7251552.

The previous prime is 21327109. The next prime is 21327149. The reversal of 21327110 is 1172312.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7691 + ... + 10089.

It is an arithmetic number, because the mean of its divisors is an integer number (1382400).

Almost surely, 2^21327110 is an apocalyptic number.

21327110 is an abundant number, since it is smaller than the sum of its proper divisors (22909690).

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

21327110 is a wasteful number, since it uses less digits than its factorization.

21327110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 21327110 is about 4618.1284087821. The cubic root of 21327110 is about 277.3175382528.

Adding to 21327110 its reverse (1172312), we get a palindrome (22499422).

The spelling of 21327110 in words is "twenty-one million, three hundred twenty-seven thousand, one hundred ten".