10221001099966 has 8 divisors (see below), whose sum is σ = 16138422789480. Its totient is φ = 4841526836808.

The previous prime is 10221001099949. The next prime is 10221001100033. The reversal of 10221001099966 is 66999010012201.

It is a happy number.

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, 134486856541 + ... + 134486856616.

It is an arithmetic number, because the mean of its divisors is an integer number (2017302848685).

Almost surely, 2^{10221001099966} is an apocalyptic number.

10221001099966 is a deficient number, since it is larger than the sum of its proper divisors (5917421689514).

10221001099966 is a wasteful number, since it uses less digits than its factorization.

10221001099966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268973713178.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 10221001099966 in words is "ten trillion, two hundred twenty-one billion, one million, ninety-nine thousand, nine hundred sixty-six".