221010011011109 has 4 divisors (see below), whose sum is σ = 221434214487660. Its totient is φ = 220585807534560.

The previous prime is 221010011011087. The next prime is 221010011011157. The reversal of 221010011011109 is 901110110010122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76299264153025 + 144710746858084 = 8734945^2 + 12029578^2 .

It is a cyclic number.

It is not a de Polignac number, because 221010011011109 - 2¹⁶ = 221010010945573 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 (221010011011199) 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, 212101737494 + ... + 212101738535.

It is an arithmetic number, because the mean of its divisors is an integer number (55358553621915).

Almost surely, 2^{221010011011109} is an apocalyptic number.

It is an amenable number.

221010011011109 is a deficient number, since it is larger than the sum of its proper divisors (424203476551).

221010011011109 is an equidigital number, since it uses as much as digits as its factorization.

221010011011109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424203476550.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 221010011011109 in words is "two hundred twenty-one trillion, ten billion, eleven million, eleven thousand, one hundred nine".