12112020 has 36 divisors (see below), whose sum is σ = 36740340. Its totient is φ = 3229824.

The previous prime is 12112019. The next prime is 12112027. The reversal of 12112020 is 2021121.

It can be written as a sum of positive squares in 2 ways, for example, as 2452356 + 9659664 = 1566^2 + 3108^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12111993 and 12112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33465 + ... + 33824.

It is an arithmetic number, because the mean of its divisors is an integer number (1020565).

Almost surely, 2^12112020 is an apocalyptic number.

12112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112020 is an abundant number, since it is smaller than the sum of its proper divisors (24628320).

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

12112020 is a wasteful number, since it uses less digits than its factorization.

12112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67304 (or 67299 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12112020 is about 3480.2327508372. The cubic root of 12112020 is about 229.6530370340.

Adding to 12112020 its reverse (2021121), we get a palindrome (14133141).

The spelling of 12112020 in words is "twelve million, one hundred twelve thousand, twenty".