21124140020224 has 40 divisors (see below), whose sum is σ = 42211746453888. Its totient is φ = 10560887731200.

The previous prime is 21124140020177. The next prime is 21124140020261. The reversal of 21124140020224 is 42202004142112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278249 + ... + 6887575.

Almost surely, 2^{21124140020224} is an apocalyptic number.

It is an amenable number.

21124140020224 is a deficient number, since it is larger than the sum of its proper divisors (21087606433664).

21124140020224 is an frugal number, since it uses more digits than its factorization.

21124140020224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618296 (or 4618280 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 21124140020224 its reverse (42202004142112), we get a palindrome (63326144162336).

The spelling of 21124140020224 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred forty million, twenty thousand, two hundred twenty-four".