21102424324 has 12 divisors (see below), whose sum is σ = 37449373248. Its totient is φ = 10402603400.

The previous prime is 21102424289. The next prime is 21102424337. The reversal of 21102424324 is 42342420112.

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, 37151872 + ... + 37152439.

It is an arithmetic number, because the mean of its divisors is an integer number (3120781104).

Almost surely, 2^21102424324 is an apocalyptic number.

It is an amenable number.

21102424324 is a deficient number, since it is larger than the sum of its proper divisors (16346948924).

21102424324 is a wasteful number, since it uses less digits than its factorization.

21102424324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74304386 (or 74304384 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21102424324 its reverse (42342420112), we get a palindrome (63444844436).

The spelling of 21102424324 in words is "twenty-one billion, one hundred two million, four hundred twenty-four thousand, three hundred twenty-four".