21224414403 has 6 divisors (see below), whose sum is σ = 30657487484. Its totient is φ = 14149609596.

The previous prime is 21224414401. The next prime is 21224414423. The reversal of 21224414403 is 30441442212.

21224414403 is a `hidden beast` number, since 2 + 1 + 2 + 244 + 14 + 403 = 666.

It is not a de Polignac number, because 21224414403 - 2¹ = 21224414401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21224414401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1179134125 + ... + 1179134142.

Almost surely, 2^21224414403 is an apocalyptic number.

21224414403 is a deficient number, since it is larger than the sum of its proper divisors (9433073081).

21224414403 is a wasteful number, since it uses less digits than its factorization.

21224414403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358268273 (or 2358268270 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21224414403 its reverse (30441442212), we get a palindrome (51665856615).

The spelling of 21224414403 in words is "twenty-one billion, two hundred twenty-four million, four hundred fourteen thousand, four hundred three".