123223120211 has 4 divisors (see below), whose sum is σ = 125243171424. Its totient is φ = 121203069000.

The previous prime is 123223120159. The next prime is 123223120213. The reversal of 123223120211 is 112021322321.

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 123223120211 - 2⁶ = 123223120147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123223120213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010025515 + ... + 1010025636.

It is an arithmetic number, because the mean of its divisors is an integer number (31310792856).

Almost surely, 2^123223120211 is an apocalyptic number.

123223120211 is a deficient number, since it is larger than the sum of its proper divisors (2020051213).

123223120211 is an equidigital number, since it uses as much as digits as its factorization.

123223120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020051212.

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

Adding to 123223120211 its reverse (112021322321), we get a palindrome (235244442532).

The spelling of 123223120211 in words is "one hundred twenty-three billion, two hundred twenty-three million, one hundred twenty thousand, two hundred eleven".