1209120921299 has 8 divisors (see below), whose sum is σ = 1237285895472. Its totient is φ = 1180958032800.

The previous prime is 1209120921233. The next prime is 1209120921311. The reversal of 1209120921299 is 9921290219021.

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-1209120921299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1209120221299) 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, 683597 + ... + 1698689.

It is an arithmetic number, because the mean of its divisors is an integer number (154660736934).

Almost surely, 2^{1209120921299} is an apocalyptic number.

1209120921299 is a deficient number, since it is larger than the sum of its proper divisors (28164974173).

1209120921299 is a wasteful number, since it uses less digits than its factorization.

1209120921299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042837.

The product of its (nonzero) digits is 104976, while the sum is 47.

The spelling of 1209120921299 in words is "one trillion, two hundred nine billion, one hundred twenty million, nine hundred twenty-one thousand, two hundred ninety-nine".