21312112320230 has 16 divisors (see below), whose sum is σ = 38372145139440. Its totient is φ = 8522546491872.

The previous prime is 21312112320229. The next prime is 21312112320253. The reversal of 21312112320230 is 3202321121312.

It is a super-2 number, since 2×21312112320230² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21312112320196 and 21312112320205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287265584 + ... + 287339763.

It is an arithmetic number, because the mean of its divisors is an integer number (2398259071215).

Almost surely, 2^{21312112320230} is an apocalyptic number.

21312112320230 is a deficient number, since it is larger than the sum of its proper divisors (17060032819210).

21312112320230 is a wasteful number, since it uses less digits than its factorization.

21312112320230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574609063.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21312112320230 its reverse (3202321121312), we get a palindrome (24514433441542).

The spelling of 21312112320230 in words is "twenty-one trillion, three hundred twelve billion, one hundred twelve million, three hundred twenty thousand, two hundred thirty".