11212221002122 has 24 divisors (see below), whose sum is σ = 20238808499460. Its totient is φ = 4639539723840.

The previous prime is 11212221002063. The next prime is 11212221002141. The reversal of 11212221002122 is 22120012221211.

It can be written as a sum of positive squares in 2 ways, for example, as 10374576879681 + 837644122441 = 3220959^2 + 915229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11212221002122.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1972590579 + ... + 1972596262.

Almost surely, 2^{11212221002122} is an apocalyptic number.

11212221002122 is a deficient number, since it is larger than the sum of its proper divisors (9026587497338).

11212221002122 is a wasteful number, since it uses less digits than its factorization.

11212221002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945186886 (or 3945186879 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11212221002122 its reverse (22120012221211), we get a palindrome (33332233223333).

The spelling of 11212221002122 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, two thousand, one hundred twenty-two".