21441127 has 4 divisors (see below), whose sum is σ = 21452400. Its totient is φ = 21429856.

The previous prime is 21441113. The next prime is 21441137. The reversal of 21441127 is 72114412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21441127 - 2⁷ = 21440999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21441098 and 21441107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (5363100).

Almost surely, 2^21441127 is an apocalyptic number.

21441127 is a deficient number, since it is larger than the sum of its proper divisors (11273).

21441127 is an equidigital number, since it uses as much as digits as its factorization.

21441127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11272.

The product of its digits is 448, while the sum is 22.

The square root of 21441127 is about 4630.4564569813. The cubic root of 21441127 is about 277.8108498875.

Adding to 21441127 its reverse (72114412), we get a palindrome (93555539).

The spelling of 21441127 in words is "twenty-one million, four hundred forty-one thousand, one hundred twenty-seven".