123201232211 has 4 divisors (see below), whose sum is σ = 125822535072. Its totient is φ = 120579929352.

The previous prime is 123201232181. The next prime is 123201232213. The reversal of 123201232211 is 112232102321.

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 123201232211 - 2³⁴ = 106021363027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123201232213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310651360 + ... + 1310651453.

It is an arithmetic number, because the mean of its divisors is an integer number (31455633768).

Almost surely, 2^123201232211 is an apocalyptic number.

123201232211 is a deficient number, since it is larger than the sum of its proper divisors (2621302861).

123201232211 is an equidigital number, since it uses as much as digits as its factorization.

123201232211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621302860.

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

Adding to 123201232211 its reverse (112232102321), we get a palindrome (235433334532).

It can be divided in two parts, 123201232 and 211, that multiplied together give a palindrome (25995459952).

The spelling of 123201232211 in words is "one hundred twenty-three billion, two hundred one million, two hundred thirty-two thousand, two hundred eleven".