21444110 has 16 divisors (see below), whose sum is σ = 38660976. Its totient is φ = 8563968.

The previous prime is 21444109. The next prime is 21444113. The reversal of 21444110 is 1144412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21444113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6974 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (2416311).

Almost surely, 2^21444110 is an apocalyptic number.

21444110 is a deficient number, since it is larger than the sum of its proper divisors (17216866).

21444110 is a wasteful number, since it uses less digits than its factorization.

21444110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 21444110 is about 4630.7785522523. The cubic root of 21444110 is about 277.8237327821.

Adding to 21444110 its reverse (1144412), we get a palindrome (22588522).

The spelling of 21444110 in words is "twenty-one million, four hundred forty-four thousand, one hundred ten".