21241351230 has 64 divisors (see below), whose sum is σ = 58031728128. Its totient is φ = 4925528960.

The previous prime is 21241351171. The next prime is 21241351273. The reversal of 21241351230 is 3215314212.

It is a self number, because there is not a number n which added to its sum of digits gives 21241351230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1391709 + ... + 1406888.

It is an arithmetic number, because the mean of its divisors is an integer number (906745752).

Almost surely, 2^21241351230 is an apocalyptic number.

21241351230 is an abundant number, since it is smaller than the sum of its proper divisors (36790376898).

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

21241351230 is a wasteful number, since it uses less digits than its factorization.

21241351230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798641.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21241351230 its reverse (3215314212), we get a palindrome (24456665442).

The spelling of 21241351230 in words is "twenty-one billion, two hundred forty-one million, three hundred fifty-one thousand, two hundred thirty".