12321120001000 has 32 divisors (see below), whose sum is σ = 28831420804680. Its totient is φ = 4928448000000.

The previous prime is 12321120000989. The next prime is 12321120001019. The reversal of 12321120001000 is 10002112321.

It can be written as a sum of positive squares in 4 ways, for example, as 4776506412484 + 7544613588516 = 2185522^2 + 2746746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6160559001 + ... + 6160561000.

Almost surely, 2^{12321120001000} is an apocalyptic number.

12321120001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321120001000 is an abundant number, since it is smaller than the sum of its proper divisors (16510300803680).

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

12321120001000 is a wasteful number, since it uses less digits than its factorization.

12321120001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12321120022 (or 12321120008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12321120001000 its reverse (10002112321), we get a palindrome (12331122113321).

The spelling of 12321120001000 in words is "twelve trillion, three hundred twenty-one billion, one hundred twenty million, one thousand".