12220312123 has 2 divisors, whose sum is σ = 12220312124. Its totient is φ = 12220312122.

The previous prime is 12220312021. The next prime is 12220312133. The reversal of 12220312123 is 32121302221.

12220312123 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 12220312123 - 2²⁵ = 12186757691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12220312123.

It is not a weakly prime, because it can be changed into another prime (12220312133) 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, 6110156061 + 6110156062.

It is an arithmetic number, because the mean of its divisors is an integer number (6110156062).

Almost surely, 2^12220312123 is an apocalyptic number.

12220312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220312123 is an equidigital number, since it uses as much as digits as its factorization.

12220312123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12220312123 its reverse (32121302221), we get a palindrome (44341614344).

The spelling of 12220312123 in words is "twelve billion, two hundred twenty million, three hundred twelve thousand, one hundred twenty-three".