12320121650 has 24 divisors (see below), whose sum is σ = 23006746224. Its totient is φ = 4908410000.

The previous prime is 12320121631. The next prime is 12320121661. The reversal of 12320121650 is 5612102321.

12320121650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478292 + ... + 503391.

It is an arithmetic number, because the mean of its divisors is an integer number (958614426).

Almost surely, 2^12320121650 is an apocalyptic number.

12320121650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12320121650 is a deficient number, since it is larger than the sum of its proper divisors (10686624574).

12320121650 is a wasteful number, since it uses less digits than its factorization.

12320121650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981946 (or 981941 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 12320121650 its reverse (5612102321), we get a palindrome (17932223971).

The spelling of 12320121650 in words is "twelve billion, three hundred twenty million, one hundred twenty-one thousand, six hundred fifty".