21024332424100 has 36 divisors (see below), whose sum is σ = 45623052032404. Its totient is φ = 8409686762880.

The previous prime is 21024332424059. The next prime is 21024332424101. The reversal of 21024332424100 is 142423342012.

It can be written as a sum of positive squares in 6 ways, for example, as 5150466847296 + 15873865576804 = 2269464^2 + 3984202^2 .

It is not an unprimeable number, because it can be changed into a prime (21024332424101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22171294 + ... + 23100106.

Almost surely, 2^{21024332424100} is an apocalyptic number.

21024332424100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21024332424100 is an abundant number, since it is smaller than the sum of its proper divisors (24598719608304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21024332424100 is a wasteful number, since it uses less digits than its factorization.

21024332424100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155184 (or 1155177 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21024332424100 its reverse (142423342012), we get a palindrome (21166755766112).

The spelling of 21024332424100 in words is "twenty-one trillion, twenty-four billion, three hundred thirty-two million, four hundred twenty-four thousand, one hundred".