1222212011999 has 6 divisors (see below), whose sum is σ = 1343423120760. Its totient is φ = 1111101828980.

The previous prime is 1222212011987. The next prime is 1222212012037. The reversal of 1222212011999 is 9991102122221.

It is not a de Polignac number, because 1222212011999 - 2⁴ = 1222212011983 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 (1222212011959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5050462739 + ... + 5050462980.

It is an arithmetic number, because the mean of its divisors is an integer number (223903853460).

Almost surely, 2^{1222212011999} is an apocalyptic number.

1222212011999 is a deficient number, since it is larger than the sum of its proper divisors (121211108761).

1222212011999 is a wasteful number, since it uses less digits than its factorization.

1222212011999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100925741 (or 10100925730 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 1222212011999 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, eleven thousand, nine hundred ninety-nine".