1201220000999 has 2 divisors, whose sum is σ = 1201220001000. Its totient is φ = 1201220000998.

The previous prime is 1201220000987. The next prime is 1201220001067. The reversal of 1201220000999 is 9990000221021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201220000999 - 2⁴ = 1201220000983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201220000399) 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, 600610000499 + 600610000500.

It is an arithmetic number, because the mean of its divisors is an integer number (600610000500).

Almost surely, 2^{1201220000999} is an apocalyptic number.

1201220000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201220000999 is an equidigital number, since it uses as much as digits as its factorization.

1201220000999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 1201220000999 in words is "one trillion, two hundred one billion, two hundred twenty million, nine hundred ninety-nine", and thus it is an aban number.