12112212021020 has 24 divisors (see below), whose sum is σ = 26931859671024. Its totient is φ = 4559891584256.

The previous prime is 12112212020959. The next prime is 12112212021029. The reversal of 12112212021020 is 2012021221121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12112212021020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112212021029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17812076162 + ... + 17812076841.

It is an arithmetic number, because the mean of its divisors is an integer number (1122160819626).

Almost surely, 2^{12112212021020} is an apocalyptic number.

12112212021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112212021020 is an abundant number, since it is smaller than the sum of its proper divisors (14819647650004).

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

12112212021020 is a wasteful number, since it uses less digits than its factorization.

12112212021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35624153029 (or 35624153027 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12112212021020 its reverse (2012021221121), we get a palindrome (14124233242141).

The spelling of 12112212021020 in words is "twelve trillion, one hundred twelve billion, two hundred twelve million, twenty-one thousand, twenty".