12321520350 has 48 divisors (see below), whose sum is σ = 30975992112. Its totient is φ = 3240725760.

The previous prime is 12321520313. The next prime is 12321520373. The reversal of 12321520350 is 5302512321.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12321520350.

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 23 ways as a sum of consecutive naturals, for example, 551677 + ... + 573576.

It is an arithmetic number, because the mean of its divisors is an integer number (645333169).

Almost surely, 2^12321520350 is an apocalyptic number.

12321520350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321520350 is an abundant number, since it is smaller than the sum of its proper divisors (18654471762).

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

12321520350 is a wasteful number, since it uses less digits than its factorization.

12321520350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125341 (or 1125336 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 12321520350 in words is "twelve billion, three hundred twenty-one million, five hundred twenty thousand, three hundred fifty".