221101022091 has 8 divisors (see below), whose sum is σ = 307618813440. Its totient is φ = 140991956072.

The previous prime is 221101022089. The next prime is 221101022117. The reversal of 221101022091 is 190220101122.

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 221101022091 - 2¹ = 221101022089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221101022011) 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 7 ways as a sum of consecutive naturals, for example, 1602181251 + ... + 1602181388.

It is an arithmetic number, because the mean of its divisors is an integer number (38452351680).

Almost surely, 2^221101022091 is an apocalyptic number.

221101022091 is a deficient number, since it is larger than the sum of its proper divisors (86517791349).

221101022091 is a wasteful number, since it uses less digits than its factorization.

221101022091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204362665.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 221101022091 in words is "two hundred twenty-one billion, one hundred one million, twenty-two thousand, ninety-one".