110223721 has 2 divisors, whose sum is σ = 110223722. Its totient is φ = 110223720.

The previous prime is 110223683. The next prime is 110223739. The reversal of 110223721 is 127322011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101223721 + 9000000 = 10061^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 110223721 - 2⁷ = 110223593 is a prime.

It is not a weakly prime, because it can be changed into another prime (110223781) 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 as a sum of consecutive naturals, namely, 55111860 + 55111861.

It is an arithmetic number, because the mean of its divisors is an integer number (55111861).

Almost surely, 2^110223721 is an apocalyptic number.

It is an amenable number.

110223721 is a deficient number, since it is larger than the sum of its proper divisors (1).

110223721 is an equidigital number, since it uses as much as digits as its factorization.

110223721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 110223721 is about 10498.7485444695. The cubic root of 110223721 is about 479.4665964176.

Adding to 110223721 its reverse (127322011), we get a palindrome (237545732).

The spelling of 110223721 in words is "one hundred ten million, two hundred twenty-three thousand, seven hundred twenty-one".