21214042113224 has 16 divisors (see below), whose sum is σ = 40428399929820. Its totient is φ = 10433135465280.

The previous prime is 21214042113197. The next prime is 21214042113287. The reversal of 21214042113224 is 42231124041212.

It can be written as a sum of positive squares in 2 ways, for example, as 14193227412100 + 7020814701124 = 3767390^2 + 2649682^2 .

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, 21735698399 + ... + 21735699374.

Almost surely, 2^{21214042113224} is an apocalyptic number.

It is an amenable number.

21214042113224 is a deficient number, since it is larger than the sum of its proper divisors (19214357816596).

21214042113224 is a wasteful number, since it uses less digits than its factorization.

21214042113224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43471397840 (or 43471397836 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21214042113224 its reverse (42231124041212), we get a palindrome (63445166154436).

The spelling of 21214042113224 in words is "twenty-one trillion, two hundred fourteen billion, forty-two million, one hundred thirteen thousand, two hundred twenty-four".