111073521 has 16 divisors (see below), whose sum is σ = 160026944. Its totient is φ = 68122944.

The previous prime is 111073511. The next prime is 111073541. The reversal of 111073521 is 125370111.

It is a happy number.

It is not a de Polignac number, because 111073521 - 2⁵ = 111073489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111073511) 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, 7335 + ... + 16611.

It is an arithmetic number, because the mean of its divisors is an integer number (10001684).

Almost surely, 2^111073521 is an apocalyptic number.

It is an amenable number.

111073521 is a deficient number, since it is larger than the sum of its proper divisors (48953423).

111073521 is a wasteful number, since it uses less digits than its factorization.

111073521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 111073521 is about 10539.1423275331. The cubic root of 111073521 is about 480.6956363326.

The spelling of 111073521 in words is "one hundred eleven million, seventy-three thousand, five hundred twenty-one".