12112312020 has 24 divisors (see below), whose sum is σ = 33914473824. Its totient is φ = 3229949856.

The previous prime is 12112312013. The next prime is 12112312021. The reversal of 12112312020 is 2021321121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112312021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 100935874 + ... + 100935993.

It is an arithmetic number, because the mean of its divisors is an integer number (1413103076).

Almost surely, 2^12112312020 is an apocalyptic number.

12112312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112312020 is an abundant number, since it is smaller than the sum of its proper divisors (21802161804).

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

12112312020 is a wasteful number, since it uses less digits than its factorization.

12112312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201871879 (or 201871877 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12112312020 its reverse (2021321121), we get a palindrome (14133633141).

The spelling of 12112312020 in words is "twelve billion, one hundred twelve million, three hundred twelve thousand, twenty".