12120200321 has 2 divisors, whose sum is σ = 12120200322. Its totient is φ = 12120200320.

The previous prime is 12120200299. The next prime is 12120200353. The reversal of 12120200321 is 12300202121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11328622096 + 791578225 = 106436^2 + 28135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120200321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120200296 and 12120200305.

It is not a weakly prime, because it can be changed into another prime (12120200821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060100160 + 6060100161.

It is an arithmetic number, because the mean of its divisors is an integer number (6060100161).

Almost surely, 2^12120200321 is an apocalyptic number.

It is an amenable number.

12120200321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120200321 is an equidigital number, since it uses as much as digits as its factorization.

12120200321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12120200321 its reverse (12300202121), we get a palindrome (24420402442).

The spelling of 12120200321 in words is "twelve billion, one hundred twenty million, two hundred thousand, three hundred twenty-one".