12211121021122 has 4 divisors (see below), whose sum is σ = 18316681531686. Its totient is φ = 6105560510560.

The previous prime is 12211121021119. The next prime is 12211121021147. The reversal of 12211121021122 is 22112012111221.

It is a happy number.

12211121021122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 11679299415001 + 531821606121 = 3417499^2 + 729261^2 .

It is a super-2 number, since 2×12211121021122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211121021122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052780255279 + ... + 3052780255282.

Almost surely, 2^{12211121021122} is an apocalyptic number.

12211121021122 is a deficient number, since it is larger than the sum of its proper divisors (6105560510564).

12211121021122 is an equidigital number, since it uses as much as digits as its factorization.

12211121021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105560510563.

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

Adding to 12211121021122 its reverse (22112012111221), we get a palindrome (34323133132343).

The spelling of 12211121021122 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-two".