440121002165012 has 96 divisors (see below), whose sum is σ = 909351457297920. Its totient is φ = 182448034191360.

The previous prime is 440121002165011. The next prime is 440121002165051. The reversal of 440121002165012 is 210561200121044.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440121002165011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150871064 + ... + 153760592.

It is an arithmetic number, because the mean of its divisors is an integer number (9472411013520).

Almost surely, 2^{440121002165012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440121002165012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454675728648960).

440121002165012 is an abundant number, since it is smaller than the sum of its proper divisors (469230455132908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440121002165012 is a wasteful number, since it uses less digits than its factorization.

440121002165012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890441 (or 2890439 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 440121002165012 its reverse (210561200121044), we get a palindrome (650682202286056).

The spelling of 440121002165012 in words is "four hundred forty trillion, one hundred twenty-one billion, two million, one hundred sixty-five thousand, twelve".