12101023121 has 4 divisors (see below), whose sum is σ = 13201116144. Its totient is φ = 11000930100.

The previous prime is 12101023093. The next prime is 12101023139. The reversal of 12101023121 is 12132010121.

12101023121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12101023121 - 2³⁰ = 11027281297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101023096 and 12101023105.

It is not an unprimeable number, because it can be changed into a prime (12101023171) 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, 550046495 + ... + 550046516.

It is an arithmetic number, because the mean of its divisors is an integer number (3300279036).

Almost surely, 2^12101023121 is an apocalyptic number.

12101023121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101023121 is a deficient number, since it is larger than the sum of its proper divisors (1100093023).

12101023121 is a wasteful number, since it uses less digits than its factorization.

12101023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100093022.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12101023121 its reverse (12132010121), we get a palindrome (24233033242).

The spelling of 12101023121 in words is "twelve billion, one hundred one million, twenty-three thousand, one hundred twenty-one".