12112010100121 has 12 divisors (see below), whose sum is σ = 12453292602676. Its totient is φ = 11777836976640.

The previous prime is 12112010100083. The next prime is 12112010100149. The reversal of 12112010100121 is 12100101021121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4083066835600 + 8028943264521 = 2020660^2 + 2833539^2 .

It is not a de Polignac number, because 12112010100121 - 2¹⁹ = 12112009575833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112010107121) 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 11 ways as a sum of consecutive naturals, for example, 16088856 + ... + 16824841.

Almost surely, 2^{12112010100121} is an apocalyptic number.

It is an amenable number.

12112010100121 is a deficient number, since it is larger than the sum of its proper divisors (341282502555).

12112010100121 is an frugal number, since it uses more digits than its factorization.

12112010100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32913912 (or 32913841 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12112010100121 its reverse (12100101021121), we get a palindrome (24212111121242).

The spelling of 12112010100121 in words is "twelve trillion, one hundred twelve billion, ten million, one hundred thousand, one hundred twenty-one".