1200210023321 has 2 divisors, whose sum is σ = 1200210023322. Its totient is φ = 1200210023320.

The previous prime is 1200210023303. The next prime is 1200210023407. The reversal of 1200210023321 is 1233200120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055345290000 + 144864733321 = 1027300^2 + 380611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200210023321 is a prime.

It is a super-3 number, since 3×1200210023321³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200210023321.

It is not a weakly prime, because it can be changed into another prime (1200210022321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600105011660 + 600105011661.

It is an arithmetic number, because the mean of its divisors is an integer number (600105011661).

Almost surely, 2^{1200210023321} is an apocalyptic number.

It is an amenable number.

1200210023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200210023321 is an equidigital number, since it uses as much as digits as its factorization.

1200210023321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1200210023321 its reverse (1233200120021), we get a palindrome (2433410143342).

The spelling of 1200210023321 in words is "one trillion, two hundred billion, two hundred ten million, twenty-three thousand, three hundred twenty-one".