12112221020020 has 24 divisors (see below), whose sum is σ = 27747997246368. Its totient is φ = 4404444007200.

The previous prime is 12112221019967. The next prime is 12112221020023. The reversal of 12112221020020 is 2002012221121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12112221019976 and 12112221020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112221020023) 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, 27527774826 + ... + 27527775265.

It is an arithmetic number, because the mean of its divisors is an integer number (1156166551932).

Almost surely, 2^{12112221020020} is an apocalyptic number.

12112221020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112221020020 is an abundant number, since it is smaller than the sum of its proper divisors (15635776226348).

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

12112221020020 is a wasteful number, since it uses less digits than its factorization.

12112221020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55055550111 (or 55055550109 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12112221020020 its reverse (2002012221121), we get a palindrome (14114233241141).

The spelling of 12112221020020 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-one million, twenty thousand, twenty".