12112210210021 has 4 divisors (see below), whose sum is σ = 12118013858592. Its totient is φ = 12106406561452.

The previous prime is 12112210209973. The next prime is 12112210210049. The reversal of 12112210210021 is 12001201221121.

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 12112210210021 - 2¹¹ = 12112210207973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112210209977 and 12112210210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112210210621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2901821155 + ... + 2901825328.

It is an arithmetic number, because the mean of its divisors is an integer number (3029503464648).

Almost surely, 2^{12112210210021} is an apocalyptic number.

It is an amenable number.

12112210210021 is a deficient number, since it is larger than the sum of its proper divisors (5803648571).

12112210210021 is an equidigital number, since it uses as much as digits as its factorization.

12112210210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803648570.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12112210210021 its reverse (12001201221121), we get a palindrome (24113411431142).

The spelling of 12112210210021 in words is "twelve trillion, one hundred twelve billion, two hundred ten million, two hundred ten thousand, twenty-one".