12112202222221 has 8 divisors (see below), whose sum is σ = 12394621616960. Its totient is φ = 11829816476352.

The previous prime is 12112202222191. The next prime is 12112202222231. The reversal of 12112202222221 is 12222220221121.

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 12112202222221 - 2¹⁹ = 12112201697933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112202222192 and 12112202222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112202222231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7683180 + ... + 9124453.

It is an arithmetic number, because the mean of its divisors is an integer number (1549327702120).

Almost surely, 2^{12112202222221} is an apocalyptic number.

It is an amenable number.

12112202222221 is a deficient number, since it is larger than the sum of its proper divisors (282419394739).

12112202222221 is a wasteful number, since it uses less digits than its factorization.

12112202222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16824435.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12112202222221 its reverse (12222220221121), we get a palindrome (24334422443342).

The spelling of 12112202222221 in words is "twelve trillion, one hundred twelve billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-one".