12211122122 has 16 divisors (see below), whose sum is σ = 19283624640. Its totient is φ = 5783344128.

The previous prime is 12211122113. The next prime is 12211122169. The reversal of 12211122122 is 22122111221.

It is a super-2 number, since 2×12211122122² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12211122122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281363 + ... + 321849.

It is an arithmetic number, because the mean of its divisors is an integer number (1205226540).

Almost surely, 2^12211122122 is an apocalyptic number.

12211122122 is a deficient number, since it is larger than the sum of its proper divisors (7072502518).

12211122122 is a wasteful number, since it uses less digits than its factorization.

12211122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48445.

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

Adding to 12211122122 its reverse (22122111221), we get a palindrome (34333233343).

It can be divided in two parts, 122111221 and 22, that multiplied together give a palindrome (2686446862).

The spelling of 12211122122 in words is "twelve billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".