440121002161522 has 16 divisors (see below), whose sum is σ = 720201104929152. Its totient is φ = 200054139484720.

The previous prime is 440121002161403. The next prime is 440121002161523. The reversal of 440121002161522 is 225161200121044.

It is not an unprimeable number, because it can be changed into a prime (440121002161523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37835833 + ... + 48081100.

It is an arithmetic number, because the mean of its divisors is an integer number (45012569058072).

Almost surely, 2^{440121002161522} is an apocalyptic number.

440121002161522 is a deficient number, since it is larger than the sum of its proper divisors (280080102767630).

440121002161522 is a wasteful number, since it uses less digits than its factorization.

440121002161522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86149793.

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 440121002161522 its reverse (225161200121044), we get a palindrome (665282202282566).

The spelling of 440121002161522 in words is "four hundred forty trillion, one hundred twenty-one billion, two million, one hundred sixty-one thousand, five hundred twenty-two".