12221342122 has 16 divisors (see below), whose sum is σ = 20001265344. Its totient is φ = 5554404000.

The previous prime is 12221342101. The next prime is 12221342129. The reversal of 12221342122 is 22124312221.

12221342122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12221342122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12221342093 and 12221342102.

It is not an unprimeable number, because it can be changed into a prime (12221342129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 149422 + ... + 216262.

It is an arithmetic number, because the mean of its divisors is an integer number (1250079084).

Almost surely, 2^12221342122 is an apocalyptic number.

12221342122 is a deficient number, since it is larger than the sum of its proper divisors (7779923222).

12221342122 is a wasteful number, since it uses less digits than its factorization.

12221342122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75165.

The product of its digits is 768, while the sum is 22.

Adding to 12221342122 its reverse (22124312221), we get a palindrome (34345654343).

The spelling of 12221342122 in words is "twelve billion, two hundred twenty-one million, three hundred forty-two thousand, one hundred twenty-two".