12101211121122 has 40 divisors (see below), whose sum is σ = 27395219866476. Its totient is φ = 3992152117248.

The previous prime is 12101211121121. The next prime is 12101211121127. The reversal of 12101211121122 is 22112111210121.

It is a happy number.

12101211121122 is a `hidden beast` number, since 1 + 210 + 1 + 211 + 121 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10261637017641 + 1839574103481 = 3203379^2 + 1356309^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12101211121095 and 12101211121104.

It is not an unprimeable number, because it can be changed into a prime (12101211121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 385029823 + ... + 385061250.

Almost surely, 2^{12101211121122} is an apocalyptic number.

12101211121122 is an abundant number, since it is smaller than the sum of its proper divisors (15294008745354).

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

12101211121122 is an equidigital number, since it uses as much as digits as its factorization.

12101211121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770091184 (or 770091175 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12101211121122 its reverse (22112111210121), we get a palindrome (34213322331243).

The spelling of 12101211121122 in words is "twelve trillion, one hundred one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".