110016721 has 4 divisors (see below), whose sum is σ = 111151012. Its totient is φ = 108882432.

The previous prime is 110016713. The next prime is 110016757. The reversal of 110016721 is 127610011.

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 67831696 + 42185025 = 8236^2 + 6495^2 .

It is a cyclic number.

It is not a de Polignac number, because 110016721 - 2³ = 110016713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110016791) 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, 567000 + ... + 567193.

It is an arithmetic number, because the mean of its divisors is an integer number (27787753).

Almost surely, 2^110016721 is an apocalyptic number.

It is an amenable number.

110016721 is a deficient number, since it is larger than the sum of its proper divisors (1134291).

110016721 is an equidigital number, since it uses as much as digits as its factorization.

110016721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134290.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 110016721 is about 10488.8855938083. The cubic root of 110016721 is about 479.1662624554.

Adding to 110016721 its reverse (127610011), we get a palindrome (237626732).

The spelling of 110016721 in words is "one hundred ten million, sixteen thousand, seven hundred twenty-one".