12112021012021 has 4 divisors (see below), whose sum is σ = 13842309728032. Its totient is φ = 10381732296012.

The previous prime is 12112021012001. The next prime is 12112021012057. The reversal of 12112021012021 is 12021012021121.

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 not a de Polignac number, because 12112021012021 - 2¹³ = 12112021003829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112021011986 and 12112021012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112021012001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865144357995 + ... + 865144358008.

It is an arithmetic number, because the mean of its divisors is an integer number (3460577432008).

Almost surely, 2^{12112021012021} is an apocalyptic number.

It is an amenable number.

12112021012021 is a deficient number, since it is larger than the sum of its proper divisors (1730288716011).

12112021012021 is an equidigital number, since it uses as much as digits as its factorization.

12112021012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730288716010.

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

Adding to 12112021012021 its reverse (12021012021121), we get a palindrome (24133033033142).

It can be divided in two parts, 121 and 12021012021, that multiplied together give a palindrome (1454542454541).

The spelling of 12112021012021 in words is "twelve trillion, one hundred twelve billion, twenty-one million, twelve thousand, twenty-one".