12112110202221 has 12 divisors (see below), whose sum is σ = 17902137043648. Its totient is φ = 7886955480264.

The previous prime is 12112110202117. The next prime is 12112110202243. The reversal of 12112110202221 is 12220201121121.

12112110202221 is a `hidden beast` number, since 1 + 211 + 21 + 10 + 202 + 221 = 666.

It is not a de Polignac number, because 12112110202221 - 2¹⁰ = 12112110201197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112110202194 and 12112110202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112110202321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15648720805 + ... + 15648721578.

Almost surely, 2^{12112110202221} is an apocalyptic number.

It is an amenable number.

12112110202221 is a deficient number, since it is larger than the sum of its proper divisors (5790026841427).

12112110202221 is a wasteful number, since it uses less digits than its factorization.

12112110202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31297442432 (or 31297442429 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12112110202221 its reverse (12220201121121), we get a palindrome (24332311323342).

The spelling of 12112110202221 in words is "twelve trillion, one hundred twelve billion, one hundred ten million, two hundred two thousand, two hundred twenty-one".