1222221209999 has 8 divisors (see below), whose sum is σ = 1234351341072. Its totient is φ = 1210091646400.

The previous prime is 1222221209987. The next prime is 1222221210029. The reversal of 1222221209999 is 9999021222221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222221209999 - 2⁴ = 1222221209983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222221209929) 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, 5167952 + ... + 5399274.

It is an arithmetic number, because the mean of its divisors is an integer number (154293917634).

Almost surely, 2^{1222221209999} is an apocalyptic number.

1222221209999 is a deficient number, since it is larger than the sum of its proper divisors (12130131073).

1222221209999 is a wasteful number, since it uses less digits than its factorization.

1222221209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283737.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 1222221209999 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred nine thousand, nine hundred ninety-nine".