21214224203 has 16 divisors (see below), whose sum is σ = 22281696000. Its totient is φ = 20172810240.

The previous prime is 21214224173. The next prime is 21214224221. The reversal of 21214224203 is 30242241212.

It is a cyclic number.

It is not a de Polignac number, because 21214224203 - 2²⁴ = 21197446987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21214224263) 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, 591323 + ... + 626171.

It is an arithmetic number, because the mean of its divisors is an integer number (1392606000).

Almost surely, 2^21214224203 is an apocalyptic number.

21214224203 is a deficient number, since it is larger than the sum of its proper divisors (1067471797).

21214224203 is a wasteful number, since it uses less digits than its factorization.

21214224203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35222.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21214224203 its reverse (30242241212), we get a palindrome (51456465415).

The spelling of 21214224203 in words is "twenty-one billion, two hundred fourteen million, two hundred twenty-four thousand, two hundred three".