21224483 has 16 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 16826496.

The previous prime is 21224479. The next prime is 21224503. The reversal of 21224483 is 38442212.

It is a cyclic number.

It is not a de Polignac number, because 21224483 - 2² = 21224479 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21224783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5510 + ... + 8532.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^21224483 is an apocalyptic number.

21224483 is a deficient number, since it is larger than the sum of its proper divisors (4902877).

21224483 is a wasteful number, since it uses less digits than its factorization.

21224483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106.

The product of its digits is 3072, while the sum is 26.

The square root of 21224483 is about 4607.0036900354. The cubic root of 21224483 is about 276.8720014045.

Adding to 21224483 its reverse (38442212), we get a palindrome (59666695).

The spelling of 21224483 in words is "twenty-one million, two hundred twenty-four thousand, four hundred eighty-three".