12220222123 has 4 divisors (see below), whose sum is σ = 12220949520. Its totient is φ = 12219494728.

The previous prime is 12220222121. The next prime is 12220222139. The reversal of 12220222123 is 32122202221.

12220222123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12220222123 - 2¹ = 12220222121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220222123.

It is not an unprimeable number, because it can be changed into a prime (12220222121) 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 3 ways as a sum of consecutive naturals, for example, 337888 + ... + 372301.

It is an arithmetic number, because the mean of its divisors is an integer number (3055237380).

Almost surely, 2^12220222123 is an apocalyptic number.

12220222123 is a deficient number, since it is larger than the sum of its proper divisors (727397).

12220222123 is an equidigital number, since it uses as much as digits as its factorization.

12220222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727396.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12220222123 its reverse (32122202221), we get a palindrome (44342424344).

The spelling of 12220222123 in words is "twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-three".