21441114 has 48 divisors (see below), whose sum is σ = 50417640. Its totient is φ = 6558720.

The previous prime is 21441113. The next prime is 21441137. The reversal of 21441114 is 41114412.

It can be written as a sum of positive squares in 4 ways, for example, as 12638025 + 8803089 = 3555^2 + 2967^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 11692 + ... + 13400.

Almost surely, 2^21441114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21441114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25208820).

21441114 is an abundant number, since it is smaller than the sum of its proper divisors (28976526).

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

21441114 is a wasteful number, since it uses less digits than its factorization.

21441114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1772 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 21441114 is about 4630.4550532318. The cubic root of 21441114 is about 277.8107937408.

Adding to 21441114 its reverse (41114412), we get a palindrome (62555526).

It can be divided in two parts, 214 and 41114, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 21441114 in words is "twenty-one million, four hundred forty-one thousand, one hundred fourteen".