12112001100020 has 12 divisors (see below), whose sum is σ = 25435202310084. Its totient is φ = 4844800440000.

The previous prime is 12112001100013. The next prime is 12112001100047. The reversal of 12112001100020 is 2000110021121.

It can be written as a sum of positive squares in 2 ways, for example, as 3142670926564 + 8969330173456 = 1772758^2 + 2994884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12112001099974 and 12112001100010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302800027481 + ... + 302800027520.

It is an arithmetic number, because the mean of its divisors is an integer number (2119600192507).

Almost surely, 2^{12112001100020} is an apocalyptic number.

12112001100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112001100020 is an abundant number, since it is smaller than the sum of its proper divisors (13323201210064).

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

12112001100020 is a wasteful number, since it uses less digits than its factorization.

12112001100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605600055010 (or 605600055008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12112001100020 its reverse (2000110021121), we get a palindrome (14112111121141).

The spelling of 12112001100020 in words is "twelve trillion, one hundred twelve billion, one million, one hundred thousand, twenty".