1040113221 has 16 divisors (see below), whose sum is σ = 1587068928. Its totient is φ = 593550000.

The previous prime is 1040113213. The next prime is 1040113247. The reversal of 1040113221 is 1223110401.

It is not a de Polignac number, because 1040113221 - 2³ = 1040113213 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040113201) 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, 17205 + ... + 48746.

It is an arithmetic number, because the mean of its divisors is an integer number (99191808).

Almost surely, 2^1040113221 is an apocalyptic number.

It is an amenable number.

1040113221 is a deficient number, since it is larger than the sum of its proper divisors (546955707).

1040113221 is an equidigital number, since it uses as much as digits as its factorization.

1040113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66712.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1040113221 is about 32250.7863625060. The cubic root of 1040113221 is about 1013.1961688068.

Adding to 1040113221 its reverse (1223110401), we get a palindrome (2263223622).

The spelling of 1040113221 in words is "one billion, forty million, one hundred thirteen thousand, two hundred twenty-one".