12122221147 has 2 divisors, whose sum is σ = 12122221148. Its totient is φ = 12122221146.

The previous prime is 12122221063. The next prime is 12122221151. The reversal of 12122221147 is 74112222121.

12122221147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12122221147 - 2¹¹ = 12122219099 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122221747) 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 as a sum of consecutive naturals, namely, 6061110573 + 6061110574.

It is an arithmetic number, because the mean of its divisors is an integer number (6061110574).

Almost surely, 2^12122221147 is an apocalyptic number.

12122221147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122221147 is an equidigital number, since it uses as much as digits as its factorization.

12122221147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

Adding to 12122221147 its reverse (74112222121), we get a palindrome (86234443268).

It can be divided in two parts, 1212222114 and 7, that added together give a palindrome (1212222121).

The spelling of 12122221147 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred forty-seven".