12112011001020 has 144 divisors (see below), whose sum is σ = 39453281642880. Its totient is φ = 2768267972736.

The previous prime is 12112011001007. The next prime is 12112011001033. The reversal of 12112011001020 is 2010011021121.

It is an interprime number because it is at equal distance from previous prime (12112011001007) and next prime (12112011001033).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12112011000987 and 12112011001005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44726467 + ... + 44996453.

It is an arithmetic number, because the mean of its divisors is an integer number (273981122520).

Almost surely, 2^{12112011001020} is an apocalyptic number.

12112011001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112011001020 is an abundant number, since it is smaller than the sum of its proper divisors (27341270641860).

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

12112011001020 is a wasteful number, since it uses less digits than its factorization.

12112011001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285272 (or 285263 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12112011001020 its reverse (2010011021121), we get a palindrome (14122022022141).

The spelling of 12112011001020 in words is "twelve trillion, one hundred twelve billion, eleven million, one thousand, twenty".