12321999989 has 8 divisors (see below), whose sum is σ = 13271606712. Its totient is φ = 11372644800.

The previous prime is 12321999953. The next prime is 12322000007. The reversal of 12321999989 is 98999912321.

It can be written as a sum of positive squares in 4 ways, for example, as 3017854225 + 9304145764 = 54935^2 + 96458^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12321999989 - 2¹⁶ = 12321934453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321999929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45839 + ... + 163539.

It is an arithmetic number, because the mean of its divisors is an integer number (1658950839).

Almost surely, 2^12321999989 is an apocalyptic number.

It is an amenable number.

12321999989 is a deficient number, since it is larger than the sum of its proper divisors (949606723).

12321999989 is a wasteful number, since it uses less digits than its factorization.

12321999989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125767.

The product of its digits is 5668704, while the sum is 62.

The spelling of 12321999989 in words is "twelve billion, three hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred eighty-nine".