110131221 has 4 divisors (see below), whose sum is σ = 146841632. Its totient is φ = 73420812.

The previous prime is 110131171. The next prime is 110131237. The reversal of 110131221 is 122131011.

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.

It is not a de Polignac number, because 110131221 - 2²² = 105936917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110131197 and 110131206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110131271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18355201 + ... + 18355206.

It is an arithmetic number, because the mean of its divisors is an integer number (36710408).

Almost surely, 2^110131221 is an apocalyptic number.

It is an amenable number.

110131221 is a deficient number, since it is larger than the sum of its proper divisors (36710411).

110131221 is an equidigital number, since it uses as much as digits as its factorization.

110131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36710410.

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

The square root of 110131221 is about 10494.3423328954. The cubic root of 110131221 is about 479.3324357247.

Adding to 110131221 its reverse (122131011), we get a palindrome (232262232).

The spelling of 110131221 in words is "one hundred ten million, one hundred thirty-one thousand, two hundred twenty-one".