12112120121021 has 8 divisors (see below), whose sum is σ = 12506313563904. Its totient is φ = 11718144171360.

The previous prime is 12112120120987. The next prime is 12112120121027. The reversal of 12112120121021 is 12012102121121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12112120121021 - 2¹⁰ = 12112120119997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112120121027) 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, 54260111 + ... + 54482876.

It is an arithmetic number, because the mean of its divisors is an integer number (1563289195488).

Almost surely, 2^{12112120121021} is an apocalyptic number.

It is an amenable number.

12112120121021 is a deficient number, since it is larger than the sum of its proper divisors (394193442883).

12112120121021 is a wasteful number, since it uses less digits than its factorization.

12112120121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108746611.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12112120121021 its reverse (12012102121121), we get a palindrome (24124222242142).

The spelling of 12112120121021 in words is "twelve trillion, one hundred twelve billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".