1204805221266 has 16 divisors (see below), whose sum is σ = 2409756087744. Its totient is φ = 401577466224.

The previous prime is 1204805221259. The next prime is 1204805221271. The reversal of 1204805221266 is 6621225084021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5960865 + ... + 6159668.

It is an arithmetic number, because the mean of its divisors is an integer number (150609755484).

Almost surely, 2^{1204805221266} is an apocalyptic number.

1204805221266 is an abundant number, since it is smaller than the sum of its proper divisors (1204950866478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1204805221266 is a wasteful number, since it uses less digits than its factorization.

1204805221266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12137105.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 1204805221266 in words is "one trillion, two hundred four billion, eight hundred five million, two hundred twenty-one thousand, two hundred sixty-six".