221100021010091 has 8 divisors (see below), whose sum is σ = 228251140752768. Its totient is φ = 213950080080000.

The previous prime is 221100021010073. The next prime is 221100021010097. The reversal of 221100021010091 is 190010120001122.

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

It is a cyclic number.

It is not a de Polignac number, because 221100021010091 - 2²² = 221100016815787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221100021010097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294321950 + ... + 295072211.

It is an arithmetic number, because the mean of its divisors is an integer number (28531392594096).

Almost surely, 2^{221100021010091} is an apocalyptic number.

221100021010091 is a deficient number, since it is larger than the sum of its proper divisors (7151119742677).

221100021010091 is a wasteful number, since it uses less digits than its factorization.

221100021010091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589406293.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 221100021010091 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, ten thousand, ninety-one".