12112212021222 has 8 divisors (see below), whose sum is σ = 24224424042456. Its totient is φ = 4037404007072.

The previous prime is 12112212021197. The next prime is 12112212021229. The reversal of 12112212021222 is 22212021221121.

It is a sphenic number, since it is the product of 3 distinct primes.

12112212021222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112212021229) 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, 1009351001763 + ... + 1009351001774.

It is an arithmetic number, because the mean of its divisors is an integer number (3028053005307).

Almost surely, 2^{12112212021222} is an apocalyptic number.

12112212021222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12112212021222 is a wasteful number, since it uses less digits than its factorization.

12112212021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018702003542.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12112212021222 its reverse (22212021221121), we get a palindrome (34324233242343).

The spelling of 12112212021222 in words is "twelve trillion, one hundred twelve billion, two hundred twelve million, twenty-one thousand, two hundred twenty-two".