12112120010121 has 4 divisors (see below), whose sum is σ = 16149493346832. Its totient is φ = 8074746673412.

The previous prime is 12112120010093. The next prime is 12112120010131. The reversal of 12112120010121 is 12101002121121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12112120010121 - 2⁹ = 12112120009609 is a prime.

It is a super-2 number, since 2×12112120010121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12112120010121.

It is not an unprimeable number, because it can be changed into a prime (12112120010131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018686668351 + ... + 2018686668356.

It is an arithmetic number, because the mean of its divisors is an integer number (4037373336708).

Almost surely, 2^{12112120010121} is an apocalyptic number.

It is an amenable number.

12112120010121 is a deficient number, since it is larger than the sum of its proper divisors (4037373336711).

12112120010121 is an equidigital number, since it uses as much as digits as its factorization.

12112120010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037373336710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12112120010121 its reverse (12101002121121), we get a palindrome (24213122131242).

The spelling of 12112120010121 in words is "twelve trillion, one hundred twelve billion, one hundred twenty million, ten thousand, one hundred twenty-one".