12222121122 has 12 divisors (see below), whose sum is σ = 26481262470. Its totient is φ = 4074040368.

The previous prime is 12222121103. The next prime is 12222121147. The reversal of 12222121122 is 22112122221.

It is a happy number.

12222121122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7092839961 + 5129281161 = 84219^2 + 71619^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 679006729 = 12222121122 / (1 + 2 + 2 + 2 + 2 + 1 + 2 + 1 + 1 + 2 + 2).

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

It is a junction number, because it is equal to n+sod(n) for n = 12222121095 and 12222121104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339503347 + ... + 339503382.

Almost surely, 2^12222121122 is an apocalyptic number.

12222121122 is an abundant number, since it is smaller than the sum of its proper divisors (14259141348).

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

12222121122 is a wasteful number, since it uses less digits than its factorization.

12222121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679006737 (or 679006734 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

Adding to 12222121122 its reverse (22112122221), we get a palindrome (34334243343).

The spelling of 12222121122 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".