1200221224309 has 2 divisors, whose sum is σ = 1200221224310. Its totient is φ = 1200221224308.

The previous prime is 1200221224187. The next prime is 1200221224331. The reversal of 1200221224309 is 9034221220021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065736199025 + 134485025284 = 1032345^2 + 366722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200221224309 - 2⁹ = 1200221223797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200221224009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110612154 + 600110612155.

It is an arithmetic number, because the mean of its divisors is an integer number (600110612155).

Almost surely, 2^{1200221224309} is an apocalyptic number.

It is an amenable number.

1200221224309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200221224309 is an equidigital number, since it uses as much as digits as its factorization.

1200221224309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 1200221224309 in words is "one trillion, two hundred billion, two hundred twenty-one million, two hundred twenty-four thousand, three hundred nine".