110001022221 has 4 divisors (see below), whose sum is σ = 146668029632. Its totient is φ = 73334014812.

The previous prime is 110001022217. The next prime is 110001022223. The reversal of 110001022221 is 122220100011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122220100011 = 3 ⋅40740033337.

It is not a de Polignac number, because 110001022221 - 2² = 110001022217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110001022197 and 110001022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110001022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18333503701 + ... + 18333503706.

It is an arithmetic number, because the mean of its divisors is an integer number (36667007408).

Almost surely, 2^110001022221 is an apocalyptic number.

It is an amenable number.

110001022221 is a deficient number, since it is larger than the sum of its proper divisors (36667007411).

110001022221 is an equidigital number, since it uses as much as digits as its factorization.

110001022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36667007410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 110001022221 its reverse (122220100011), we get a palindrome (232221122232).

The spelling of 110001022221 in words is "one hundred ten billion, one million, twenty-two thousand, two hundred twenty-one".