21124232340030 has 288 divisors, whose sum is σ = 57546610898400. Its totient is φ = 5374224640512.

The previous prime is 21124232339963. The next prime is 21124232340037. The reversal of 21124232340030 is 3004323242112.

21124232340030 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 423 + 234 + 0 + 0 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21124232339976 and 21124232340003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124232340037) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2019712941 + ... + 2019723399.

It is an arithmetic number, because the mean of its divisors is an integer number (199814621175).

Almost surely, 2^{21124232340030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21124232340030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28773305449200).

21124232340030 is an abundant number, since it is smaller than the sum of its proper divisors (36422378558370).

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

21124232340030 is a wasteful number, since it uses less digits than its factorization.

21124232340030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10840 (or 10794 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21124232340030 its reverse (3004323242112), we get a palindrome (24128555582142).

The spelling of 21124232340030 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred thirty-two million, three hundred forty thousand, thirty".