110001012002221 has 4 divisors (see below), whose sum is σ = 110001330030844. Its totient is φ = 110000693973600.

The previous prime is 110001012002213. The next prime is 110001012002237. The reversal of 110001012002221 is 122200210100011.

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 81426909026596 + 28574102975625 = 9023686^2 + 5345475^2 .

It is a cyclic number.

It is not a de Polignac number, because 110001012002221 - 2³ = 110001012002213 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 (110001012002621) 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, 158494920 + ... + 159187441.

It is an arithmetic number, because the mean of its divisors is an integer number (27500332507711).

Almost surely, 2^{110001012002221} is an apocalyptic number.

It is an amenable number.

110001012002221 is a deficient number, since it is larger than the sum of its proper divisors (318028623).

110001012002221 is an equidigital number, since it uses as much as digits as its factorization.

110001012002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318028622.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 110001012002221 its reverse (122200210100011), we get a palindrome (232201222102232).

The spelling of 110001012002221 in words is "one hundred ten trillion, one billion, twelve million, two thousand, two hundred twenty-one".