100221000022091 has 32 divisors (see below), whose sum is σ = 110358595744320. Its totient is φ = 90455235577344.

The previous prime is 100221000022079. The next prime is 100221000022151. The reversal of 100221000022091 is 190220000122001.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221000022091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221000022061) 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 31 ways as a sum of consecutive naturals, for example, 102659021 + ... + 103630673.

It is an arithmetic number, because the mean of its divisors is an integer number (3448706117010).

Almost surely, 2^{100221000022091} is an apocalyptic number.

100221000022091 is a deficient number, since it is larger than the sum of its proper divisors (10137595722229).

100221000022091 is a wasteful number, since it uses less digits than its factorization.

100221000022091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972735.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 100221000022091 its reverse (190220000122001), we get a palindrome (290441000144092).

The spelling of 100221000022091 in words is "one hundred trillion, two hundred twenty-one billion, twenty-two thousand, ninety-one".