21441116 has 12 divisors (see below), whose sum is σ = 37599240. Its totient is φ = 10698480.

The previous prime is 21441113. The next prime is 21441137. The reversal of 21441116 is 61114412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441113) 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, 3230 + ... + 7301.

It is an arithmetic number, because the mean of its divisors is an integer number (3133270).

Almost surely, 2^21441116 is an apocalyptic number.

It is an amenable number.

21441116 is a deficient number, since it is larger than the sum of its proper divisors (16158124).

21441116 is a wasteful number, since it uses less digits than its factorization.

21441116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11044 (or 11042 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 21441116 is about 4630.4552691933. The cubic root of 21441116 is about 277.8108023788.

Adding to 21441116 its reverse (61114412), we get a palindrome (82555528).

The spelling of 21441116 in words is "twenty-one million, four hundred forty-one thousand, one hundred sixteen".