21222313123230 has 192 divisors, whose sum is σ = 59680763670528. Its totient is φ = 5211840568320.

The previous prime is 21222313123189. The next prime is 21222313123259. The reversal of 21222313123230 is 3232131322212.

21222313123230 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 23 + 1 + 312 + 323 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21222313123194 and 21222313123203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 330106669 + ... + 330170951.

It is an arithmetic number, because the mean of its divisors is an integer number (310837310784).

Almost surely, 2^{21222313123230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21222313123230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29840381835264).

21222313123230 is an abundant number, since it is smaller than the sum of its proper divisors (38458450547298).

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

21222313123230 is a wasteful number, since it uses less digits than its factorization.

21222313123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68951 (or 68948 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21222313123230 its reverse (3232131322212), we get a palindrome (24454444445442).

The spelling of 21222313123230 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred thirteen million, one hundred twenty-three thousand, two hundred thirty".