1201011199939 has 2 divisors, whose sum is σ = 1201011199940. Its totient is φ = 1201011199938.

The previous prime is 1201011199909. The next prime is 1201011200047. The reversal of 1201011199939 is 9399911101021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201011199939 - 2⁵ = 1201011199907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201011199909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600505599969 + 600505599970.

It is an arithmetic number, because the mean of its divisors is an integer number (600505599970).

Almost surely, 2^{1201011199939} is an apocalyptic number.

1201011199939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201011199939 is an equidigital number, since it uses as much as digits as its factorization.

1201011199939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 46.

The spelling of 1201011199939 in words is "one trillion, two hundred one billion, eleven million, one hundred ninety-nine thousand, nine hundred thirty-nine".