12112222041520 has 20 divisors (see below), whose sum is σ = 28160916246720. Its totient is φ = 4844888816576.

The previous prime is 12112222041443. The next prime is 12112222041527. The reversal of 12112222041520 is 2514022221121.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (12112222041527) 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 3 ways as a sum of consecutive naturals, for example, 75701387680 + ... + 75701387839.

It is an arithmetic number, because the mean of its divisors is an integer number (1408045812336).

Almost surely, 2^{12112222041520} is an apocalyptic number.

12112222041520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112222041520 is an abundant number, since it is smaller than the sum of its proper divisors (16048694205200).

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

12112222041520 is a wasteful number, since it uses less digits than its factorization.

12112222041520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151402775532 (or 151402775526 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 12112222041520 its reverse (2514022221121), we get a palindrome (14626244262641).

The spelling of 12112222041520 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-two million, forty-one thousand, five hundred twenty".