120243221130551 has 16 divisors (see below), whose sum is σ = 128566680883200. Its totient is φ = 112257759115488.

The previous prime is 120243221130547. The next prime is 120243221130559. The reversal of 120243221130551 is 155031122342021.

It is not a de Polignac number, because 120243221130551 - 2² = 120243221130547 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 (120243221130559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531329831 + ... + 531556088.

It is an arithmetic number, because the mean of its divisors is an integer number (8035417555200).

Almost surely, 2^{120243221130551} is an apocalyptic number.

120243221130551 is a deficient number, since it is larger than the sum of its proper divisors (8323459752649).

120243221130551 is a wasteful number, since it uses less digits than its factorization.

120243221130551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062886078.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 120243221130551 its reverse (155031122342021), we get a palindrome (275274343472572).

The spelling of 120243221130551 in words is "one hundred twenty trillion, two hundred forty-three billion, two hundred twenty-one million, one hundred thirty thousand, five hundred fifty-one".