123322120211 has 4 divisors (see below), whose sum is σ = 123339167952. Its totient is φ = 123305072472.

The previous prime is 123322120189. The next prime is 123322120213. The reversal of 123322120211 is 112021223321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123322120211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123322120213) 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, 8513015 + ... + 8527488.

It is an arithmetic number, because the mean of its divisors is an integer number (30834791988).

Almost surely, 2^123322120211 is an apocalyptic number.

123322120211 is a deficient number, since it is larger than the sum of its proper divisors (17047741).

123322120211 is an equidigital number, since it uses as much as digits as its factorization.

123322120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17047740.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123322120211 its reverse (112021223321), we get a palindrome (235343343532).

The spelling of 123322120211 in words is "one hundred twenty-three billion, three hundred twenty-two million, one hundred twenty thousand, two hundred eleven".