1200300021209 has 2 divisors, whose sum is σ = 1200300021210. Its totient is φ = 1200300021208.

The previous prime is 1200300021199. The next prime is 1200300021227. The reversal of 1200300021209 is 9021200030021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862037971600 + 338262049609 = 928460^2 + 581603^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200300021209 - 2³² = 1196005053913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200300021409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600150010604 + 600150010605.

It is an arithmetic number, because the mean of its divisors is an integer number (600150010605).

Almost surely, 2^{1200300021209} is an apocalyptic number.

It is an amenable number.

1200300021209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200300021209 is an equidigital number, since it uses as much as digits as its factorization.

1200300021209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 1200300021209 in words is "one trillion, two hundred billion, three hundred million, twenty-one thousand, two hundred nine".