221200100120999 has 4 divisors (see below), whose sum is σ = 221200146194664. Its totient is φ = 221200054047336.

The previous prime is 221200100120957. The next prime is 221200100121041. The reversal of 221200100120999 is 999021001002122.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (221200100120957) and next prime (221200100121041).

It is a cyclic number.

It is not a de Polignac number, because 221200100120999 - 2³² = 221195805153703 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 (221200180120999) by changing a digit.

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, 14870312 + ... + 25759005.

It is an arithmetic number, because the mean of its divisors is an integer number (55300036548666).

Almost surely, 2^{221200100120999} is an apocalyptic number.

221200100120999 is a deficient number, since it is larger than the sum of its proper divisors (46073665).

221200100120999 is an equidigital number, since it uses as much as digits as its factorization.

221200100120999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46073664.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 221200100120999 in words is "two hundred twenty-one trillion, two hundred billion, one hundred million, one hundred twenty thousand, nine hundred ninety-nine".