21214134224 has 20 divisors (see below), whose sum is σ = 41104689444. Its totient is φ = 10606472448.

The previous prime is 21214134217. The next prime is 21214134247. The reversal of 21214134224 is 42243141212.

It can be written as a sum of positive squares in 2 ways, for example, as 9748007824 + 11466126400 = 98732^2 + 107080^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21214134193 and 21214134202.

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, 453164 + ... + 497780.

Almost surely, 2^21214134224 is an apocalyptic number.

It is an amenable number.

21214134224 is a deficient number, since it is larger than the sum of its proper divisors (19890555220).

21214134224 is a wasteful number, since it uses less digits than its factorization.

21214134224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74342 (or 74336 counting only the distinct ones).

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

Adding to 21214134224 its reverse (42243141212), we get a palindrome (63457275436).

The spelling of 21214134224 in words is "twenty-one billion, two hundred fourteen million, one hundred thirty-four thousand, two hundred twenty-four".