4040221145 has 4 divisors (see below), whose sum is σ = 4848265380. Its totient is φ = 3232176912.

The previous prime is 4040221117. The next prime is 4040221151. The reversal of 4040221145 is 5411220404.

4040221145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1791659584 + 2248561561 = 42328^2 + 47419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4040221145 is a prime.

It is a super-2 number, since 2×4040221145² = 32646773801010222050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4040221145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404022110 + ... + 404022119.

It is an arithmetic number, because the mean of its divisors is an integer number (1212066345).

Almost surely, 2^4040221145 is an apocalyptic number.

It is an amenable number.

4040221145 is a deficient number, since it is larger than the sum of its proper divisors (808044235).

4040221145 is an equidigital number, since it uses as much as digits as its factorization.

4040221145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808044234.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4040221145 is about 63562.7339327062. The cubic root of 4040221145 is about 1592.7039082302.

Adding to 4040221145 its reverse (5411220404), we get a palindrome (9451441549).

The spelling of 4040221145 in words is "four billion, forty million, two hundred twenty-one thousand, one hundred forty-five".