12320200121 has 8 divisors (see below), whose sum is σ = 12357280200. Its totient is φ = 12283176960.

The previous prime is 12320200111. The next prime is 12320200127. The reversal of 12320200121 is 12100202321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1220524096 + 11099676025 = 34936^2 + 105355^2 .

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 12320200121 - 2¹⁸ = 12319937977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320200096 and 12320200105.

It is not an unprimeable number, because it can be changed into a prime (12320200127) 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, 440915 + ... + 468023.

It is an arithmetic number, because the mean of its divisors is an integer number (1544660025).

Almost surely, 2^12320200121 is an apocalyptic number.

It is an amenable number.

12320200121 is a deficient number, since it is larger than the sum of its proper divisors (37080079).

12320200121 is an equidigital number, since it uses as much as digits as its factorization.

12320200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28459.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12320200121 its reverse (12100202321), we get a palindrome (24420402442).

The spelling of 12320200121 in words is "twelve billion, three hundred twenty million, two hundred thousand, one hundred twenty-one".