9040111021 has 8 divisors (see below), whose sum is σ = 9094916664. Its totient is φ = 8985335040.

The previous prime is 9040111007. The next prime is 9040111027. The reversal of 9040111021 is 1201110409.

9040111021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3148780996 + 5891330025 = 56114^2 + 76755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9040111021 - 2²⁵ = 9006556589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9040111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9040111027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054665 + ... + 1063201.

It is an arithmetic number, because the mean of its divisors is an integer number (1136864583).

Almost surely, 2^9040111021 is an apocalyptic number.

It is an amenable number.

9040111021 is a deficient number, since it is larger than the sum of its proper divisors (54805643).

9040111021 is a wasteful number, since it uses less digits than its factorization.

9040111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14831.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 9040111021 is about 95079.4984263169. The cubic root of 9040111021 is about 2083.1694024028.

The spelling of 9040111021 in words is "nine billion, forty million, one hundred eleven thousand, twenty-one".