4440011031221 has 4 divisors (see below), whose sum is σ = 4548303983244. Its totient is φ = 4331718079200.

The previous prime is 4440011031193. The next prime is 4440011031241. The reversal of 4440011031221 is 1221301100444.

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 1354767963025 + 3085243068196 = 1163945^2 + 1756486^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440011031221 - 2²² = 4440006836917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440011031241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54146475950 + ... + 54146476031.

It is an arithmetic number, because the mean of its divisors is an integer number (1137075995811).

Almost surely, 2^{4440011031221} is an apocalyptic number.

4440011031221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4440011031221 is a deficient number, since it is larger than the sum of its proper divisors (108292952023).

4440011031221 is a wasteful number, since it uses less digits than its factorization.

4440011031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108292952022.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 4440011031221 its reverse (1221301100444), we get a palindrome (5661312131665).

The spelling of 4440011031221 in words is "four trillion, four hundred forty billion, eleven million, thirty-one thousand, two hundred twenty-one".