12211200021122 has 4 divisors (see below), whose sum is σ = 18316800031686. Its totient is φ = 6105600010560.

The previous prime is 12211200021109. The next prime is 12211200021161. The reversal of 12211200021122 is 22112000211221.

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., 12099329171281 + 111870849841 = 3478409^2 + 334471^2 .

It is a super-2 number, since 2×12211200021122² (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 12211200021122.

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 as a sum of consecutive naturals, namely, 3052800005279 + ... + 3052800005282.

Almost surely, 2^{12211200021122} is an apocalyptic number.

12211200021122 is a deficient number, since it is larger than the sum of its proper divisors (6105600010564).

12211200021122 is an equidigital number, since it uses as much as digits as its factorization.

12211200021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105600010563.

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

Adding to 12211200021122 its reverse (22112000211221), we get a palindrome (34323200232343).

The spelling of 12211200021122 in words is "twelve trillion, two hundred eleven billion, two hundred million, twenty-one thousand, one hundred twenty-two".