12112001220122 has 4 divisors (see below), whose sum is σ = 18168001830186. Its totient is φ = 6056000610060.

The previous prime is 12112001220049. The next prime is 12112001220133. The reversal of 12112001220122 is 22102210021121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9317457107401 + 2794544112721 = 3052451^2 + 1671689^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12112001220122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3028000305029 + ... + 3028000305032.

Almost surely, 2^{12112001220122} is an apocalyptic number.

12112001220122 is a deficient number, since it is larger than the sum of its proper divisors (6056000610064).

12112001220122 is an equidigital number, since it uses as much as digits as its factorization.

12112001220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056000610063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12112001220122 its reverse (22102210021121), we get a palindrome (34214211241243).

The spelling of 12112001220122 in words is "twelve trillion, one hundred twelve billion, one million, two hundred twenty thousand, one hundred twenty-two".