100221321029999 has 4 divisors (see below), whose sum is σ = 107930653416936. Its totient is φ = 92511988643064.

The previous prime is 100221321029969. The next prime is 100221321030023. The reversal of 100221321029999 is 999920123122001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100221321029999 - 2²⁸ = 100221052594543 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 (100221321029969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3854666193449 + ... + 3854666193474.

It is an arithmetic number, because the mean of its divisors is an integer number (26982663354234).

Almost surely, 2^{100221321029999} is an apocalyptic number.

100221321029999 is a deficient number, since it is larger than the sum of its proper divisors (7709332386937).

100221321029999 is an equidigital number, since it uses as much as digits as its factorization.

100221321029999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7709332386936.

The product of its (nonzero) digits is 314928, while the sum is 50.

The spelling of 100221321029999 in words is "one hundred trillion, two hundred twenty-one billion, three hundred twenty-one million, twenty-nine thousand, nine hundred ninety-nine".