12055121005 has 16 divisors (see below), whose sum is σ = 15319672560. Its totient is φ = 9075269632.

The previous prime is 12055121003. The next prime is 12055121033. The reversal of 12055121005 is 50012155021.

It is a happy number.

12055121005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 53042089 + 12002078916 = 7283^2 + 109554^2 .

It is a cyclic number.

It is not a de Polignac number, because 12055121005 - 2¹ = 12055121003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12055121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943701 + ... + 956389.

It is an arithmetic number, because the mean of its divisors is an integer number (957479535).

Almost surely, 2^12055121005 is an apocalyptic number.

It is an amenable number.

12055121005 is a deficient number, since it is larger than the sum of its proper divisors (3264551555).

12055121005 is a wasteful number, since it uses less digits than its factorization.

12055121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23888.

The product of its (nonzero) digits is 500, while the sum is 22.

Adding to 12055121005 its reverse (50012155021), we get a palindrome (62067276026).

The spelling of 12055121005 in words is "twelve billion, fifty-five million, one hundred twenty-one thousand, five".