110720521 has 16 divisors (see below), whose sum is σ = 117489600. Its totient is φ = 104182848.

The previous prime is 110720513. The next prime is 110720537. The reversal of 110720521 is 125027011.

It is not a de Polignac number, because 110720521 - 2³ = 110720513 is a prime.

It is a super-2 number, since 2×110720521² = 24518067541022882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110720591) 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 15 ways as a sum of consecutive naturals, for example, 278695 + ... + 279091.

It is an arithmetic number, because the mean of its divisors is an integer number (7343100).

Almost surely, 2^110720521 is an apocalyptic number.

It is an amenable number.

110720521 is a deficient number, since it is larger than the sum of its proper divisors (6769079).

110720521 is a wasteful number, since it uses less digits than its factorization.

110720521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 110720521 is about 10522.3819071539. The cubic root of 110720521 is about 480.1858669655.

Adding to 110720521 its reverse (125027011), we get a palindrome (235747532).

The spelling of 110720521 in words is "one hundred ten million, seven hundred twenty thousand, five hundred twenty-one".