1200220112321 has 2 divisors, whose sum is σ = 1200220112322. Its totient is φ = 1200220112320.

The previous prime is 1200220112317. The next prime is 1200220112359. The reversal of 1200220112321 is 1232110220021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 953122638400 + 247097473921 = 976280^2 + 497089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200220112321 - 2² = 1200220112317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200220112321.

It is not a weakly prime, because it can be changed into another prime (1200225112321) 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 as a sum of consecutive naturals, namely, 600110056160 + 600110056161.

It is an arithmetic number, because the mean of its divisors is an integer number (600110056161).

Almost surely, 2^{1200220112321} is an apocalyptic number.

It is an amenable number.

1200220112321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200220112321 is an equidigital number, since it uses as much as digits as its factorization.

1200220112321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1200220112321 its reverse (1232110220021), we get a palindrome (2432330332342).

The spelling of 1200220112321 in words is "one trillion, two hundred billion, two hundred twenty million, one hundred twelve thousand, three hundred twenty-one".