21124102230 has 96 divisors (see below), whose sum is σ = 68475034368. Its totient is φ = 4389422400.

The previous prime is 21124102217. The next prime is 21124102253. The reversal of 21124102230 is 3220142112.

It is a happy number.

21124102230 is a `hidden beast` number, since 21 + 1 + 2 + 410 + 2 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1517176 + ... + 1531035.

It is an arithmetic number, because the mean of its divisors is an integer number (713281608).

Almost surely, 2^21124102230 is an apocalyptic number.

21124102230 is an abundant number, since it is smaller than the sum of its proper divisors (47350932138).

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

21124102230 is a wasteful number, since it uses less digits than its factorization.

21124102230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048242 (or 3048239 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21124102230 its reverse (3220142112), we get a palindrome (24344244342).

The spelling of 21124102230 in words is "twenty-one billion, one hundred twenty-four million, one hundred two thousand, two hundred thirty".