120021312412144 has 160 divisors (see below), whose sum is σ = 273832322609664. Its totient is φ = 50241222896640.

The previous prime is 120021312412051. The next prime is 120021312412201. The reversal of 120021312412144 is 441214213120021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10185966477 + ... + 10185978259.

Almost surely, 2^{120021312412144} 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 120021312412144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136916161304832).

120021312412144 is an abundant number, since it is smaller than the sum of its proper divisors (153811010197520).

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

120021312412144 is a wasteful number, since it uses less digits than its factorization.

120021312412144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21815 (or 21809 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 120021312412144 its reverse (441214213120021), we get a palindrome (561235525532165).

The spelling of 120021312412144 in words is "one hundred twenty trillion, twenty-one billion, three hundred twelve million, four hundred twelve thousand, one hundred forty-four".