12122111323 has 6 divisors (see below), whose sum is σ = 14101231596. Its totient is φ = 10390381092.

The previous prime is 12122111317. The next prime is 12122111327. The reversal of 12122111323 is 32311122121.

It is not a de Polignac number, because 12122111323 - 2⁹ = 12122110811 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 12122111323.

It is not an unprimeable number, because it can be changed into a prime (12122111327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123694965 + ... + 123695062.

It is an arithmetic number, because the mean of its divisors is an integer number (2350205266).

Almost surely, 2^12122111323 is an apocalyptic number.

12122111323 is a deficient number, since it is larger than the sum of its proper divisors (1979120273).

12122111323 is an equidigital number, since it uses as much as digits as its factorization.

12122111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247390041 (or 247390034 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 12122111323 its reverse (32311122121), we get a palindrome (44433233444).

The spelling of 12122111323 in words is "twelve billion, one hundred twenty-two million, one hundred eleven thousand, three hundred twenty-three".