21441214 has 8 divisors (see below), whose sum is σ = 32187960. Its totient is φ = 10711896.

The previous prime is 21441197. The next prime is 21441223. The reversal of 21441214 is 41214412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21441191 and 21441200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649 + ... + 6580.

It is an arithmetic number, because the mean of its divisors is an integer number (4023495).

Almost surely, 2^21441214 is an apocalyptic number.

21441214 is a deficient number, since it is larger than the sum of its proper divisors (10746746).

21441214 is a wasteful number, since it uses less digits than its factorization.

21441214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8714.

The product of its digits is 256, while the sum is 19.

The square root of 21441214 is about 4630.4658512940. The cubic root of 21441214 is about 277.8112256375.

Adding to 21441214 its reverse (41214412), we get a palindrome (62655626).

The spelling of 21441214 in words is "twenty-one million, four hundred forty-one thousand, two hundred fourteen".