440121434013001 has 4 divisors (see below), whose sum is σ = 473976928937092. Its totient is φ = 406265939088912.

The previous prime is 440121434012999. The next prime is 440121434013017. The reversal of 440121434013001 is 100310434121044.

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 228311948900025 + 211809485112976 = 15109995^2 + 14553676^2 .

It is a cyclic number.

It is not a de Polignac number, because 440121434013001 - 2¹ = 440121434012999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440121434013031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16927747462026 + ... + 16927747462051.

It is an arithmetic number, because the mean of its divisors is an integer number (118494232234273).

Almost surely, 2^{440121434013001} is an apocalyptic number.

It is an amenable number.

440121434013001 is a deficient number, since it is larger than the sum of its proper divisors (33855494924091).

440121434013001 is a wasteful number, since it uses less digits than its factorization.

440121434013001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33855494924090.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 440121434013001 its reverse (100310434121044), we get a palindrome (540431868134045).

The spelling of 440121434013001 in words is "four hundred forty trillion, one hundred twenty-one billion, four hundred thirty-four million, thirteen thousand, one".