1201311201209 has 32 divisors (see below), whose sum is σ = 1471675910400. Its totient is φ = 957179750400.

The previous prime is 1201311201199. The next prime is 1201311201253. The reversal of 1201311201209 is 9021021131021.

It is not a de Polignac number, because 1201311201209 - 2²⁰ = 1201310152633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201311201509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4793582 + ... + 5037960.

It is an arithmetic number, because the mean of its divisors is an integer number (45989872200).

Almost surely, 2^{1201311201209} is an apocalyptic number.

It is an amenable number.

1201311201209 is a deficient number, since it is larger than the sum of its proper divisors (270364709191).

1201311201209 is a wasteful number, since it uses less digits than its factorization.

1201311201209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244913.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1201311201209 in words is "one trillion, two hundred one billion, three hundred eleven million, two hundred one thousand, two hundred nine".