12321010121 has 8 divisors (see below), whose sum is σ = 14095937664. Its totient is φ = 10549778400.

The previous prime is 12321010073. The next prime is 12321010127. The reversal of 12321010121 is 12101012321.

12321010121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 12321010121 - 2⁶ = 12321010057 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321010096 and 12321010105.

It is not an unprimeable number, because it can be changed into a prime (12321010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916805 + ... + 930146.

It is an arithmetic number, because the mean of its divisors is an integer number (1761992208).

Almost surely, 2^12321010121 is an apocalyptic number.

It is an amenable number.

12321010121 is a deficient number, since it is larger than the sum of its proper divisors (1774927543).

12321010121 is an equidigital number, since it uses as much as digits as its factorization.

12321010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847911.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12321010121 its reverse (12101012321), we get a palindrome (24422022442).

It can be divided in two parts, 123210 and 10121, that added together give a palindrome (133331).

The spelling of 12321010121 in words is "twelve billion, three hundred twenty-one million, ten thousand, one hundred twenty-one".