12122201111122 has 4 divisors (see below), whose sum is σ = 18183301666686. Its totient is φ = 6061100555560.

The previous prime is 12122201111087. The next prime is 12122201111161. The reversal of 12122201111122 is 22111110222121.

It is a happy number.

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., 11040873573961 + 1081327537161 = 3322781^2 + 1039869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12122201111122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030550277779 + ... + 3030550277782.

Almost surely, 2^{12122201111122} is an apocalyptic number.

12122201111122 is a deficient number, since it is larger than the sum of its proper divisors (6061100555564).

12122201111122 is an equidigital number, since it uses as much as digits as its factorization.

12122201111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061100555563.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122201111122 its reverse (22111110222121), we get a palindrome (34233311333243).

The spelling of 12122201111122 in words is "twelve trillion, one hundred twenty-two billion, two hundred one million, one hundred eleven thousand, one hundred twenty-two".