21413415224 has 32 divisors (see below), whose sum is σ = 41299988400. Its totient is φ = 10400993280.

The previous prime is 21413415193. The next prime is 21413415229. The reversal of 21413415224 is 42251431412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413415229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133307 + ... + 246165.

Almost surely, 2^21413415224 is an apocalyptic number.

It is an amenable number.

21413415224 is a deficient number, since it is larger than the sum of its proper divisors (19886573176).

21413415224 is a wasteful number, since it uses less digits than its factorization.

21413415224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113543 (or 113539 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

Adding to 21413415224 its reverse (42251431412), we get a palindrome (63664846636).

The spelling of 21413415224 in words is "twenty-one billion, four hundred thirteen million, four hundred fifteen thousand, two hundred twenty-four".