110221121 has 4 divisors (see below), whose sum is σ = 110337732. Its totient is φ = 110104512.

The previous prime is 110221103. The next prime is 110221171. The reversal of 110221121 is 121122011.

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 34339600 + 75881521 = 5860^2 + 8711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110221121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56876 + ... + 58781.

It is an arithmetic number, because the mean of its divisors is an integer number (27584433).

Almost surely, 2^110221121 is an apocalyptic number.

It is an amenable number.

110221121 is a deficient number, since it is larger than the sum of its proper divisors (116611).

110221121 is an equidigital number, since it uses as much as digits as its factorization.

110221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116610.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 110221121 is about 10498.6247194573. The cubic root of 110221121 is about 479.4628264398.

Adding to 110221121 its reverse (121122011), we get a palindrome (231343132).

The spelling of 110221121 in words is "one hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".