1200221021099 has 2 divisors, whose sum is σ = 1200221021100. Its totient is φ = 1200221021098.

The previous prime is 1200221021093. The next prime is 1200221021141. The reversal of 1200221021099 is 9901201220021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200221021099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200221021093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110510549 + 600110510550.

It is an arithmetic number, because the mean of its divisors is an integer number (600110510550).

Almost surely, 2^{1200221021099} is an apocalyptic number.

1200221021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200221021099 is an equidigital number, since it uses as much as digits as its factorization.

1200221021099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1200221021099 in words is "one trillion, two hundred billion, two hundred twenty-one million, twenty-one thousand, ninety-nine".