1209481849121 has 8 divisors (see below), whose sum is σ = 1488593045184. Its totient is φ = 956952671760.

The previous prime is 1209481849087. The next prime is 1209481849153. The reversal of 1209481849121 is 1219481849021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1209481849121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1209481849121.

It is not an unprimeable number, because it can be changed into a prime (1209481843121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6645504575 + ... + 6645504756.

It is an arithmetic number, because the mean of its divisors is an integer number (186074130648).

Almost surely, 2^{1209481849121} is an apocalyptic number.

It is an amenable number.

1209481849121 is a deficient number, since it is larger than the sum of its proper divisors (279111196063).

1209481849121 is a wasteful number, since it uses less digits than its factorization.

1209481849121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13291009351.

The product of its (nonzero) digits is 331776, while the sum is 50.

The spelling of 1209481849121 in words is "one trillion, two hundred nine billion, four hundred eighty-one million, eight hundred forty-nine thousand, one hundred twenty-one".