9999891210022 has 8 divisors (see below), whose sum is σ = 17142670645776. Its totient is φ = 4285667661432.

The previous prime is 9999891209933. The next prime is 9999891210083. The reversal of 9999891210022 is 2200121989999.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357138971773 + ... + 357138971800.

It is an arithmetic number, because the mean of its divisors is an integer number (2142833830722).

Almost surely, 2^{9999891210022} is an apocalyptic number.

9999891210022 is a deficient number, since it is larger than the sum of its proper divisors (7142779435754).

9999891210022 is a wasteful number, since it uses less digits than its factorization.

9999891210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714277943582.

The product of its (nonzero) digits is 3779136, while the sum is 61.

The spelling of 9999891210022 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred ninety-one million, two hundred ten thousand, twenty-two".