110721 has 16 divisors (see below), whose sum is σ = 169344. Its totient is φ = 63744.

The previous prime is 110711. The next prime is 110729. The reversal of 110721 is 127011.

It is a de Polignac number, because none of the positive numbers 2^k-110721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110697 and 110706.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 110721.

It is not an unprimeable number, because it can be changed into a prime (110729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (10584).

2¹¹⁰⁷²¹ is an apocalyptic number.

It is an amenable number.

110721 is a deficient number, since it is larger than the sum of its proper divisors (58623).

110721 is a wasteful number, since it uses less digits than its factorization.

110721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 110721 is about 332.7476521330. The cubic root of 110721 is about 48.0186559426.

Adding to 110721 its reverse (127011), we get a palindrome (237732).

Subtracting 110721 from its reverse (127011), we obtain a triangular number (16290 = T₁₈₀).

It can be divided in two parts, 1107 and 21, that added together give a triangular number (1128 = T₄₇).

The spelling of 110721 in words is "one hundred ten thousand, seven hundred twenty-one", and thus it is an iban number.