123201321223 has 4 divisors (see below), whose sum is σ = 123881991688. Its totient is φ = 122520650760.

The previous prime is 123201321179. The next prime is 123201321253. The reversal of 123201321223 is 322123102321.

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-123201321223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123201321194 and 123201321203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201321253) 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, 340334961 + ... + 340335322.

It is an arithmetic number, because the mean of its divisors is an integer number (30970497922).

Almost surely, 2^123201321223 is an apocalyptic number.

123201321223 is a deficient number, since it is larger than the sum of its proper divisors (680670465).

123201321223 is an equidigital number, since it uses as much as digits as its factorization.

123201321223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680670464.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123201321223 its reverse (322123102321), we get a palindrome (445324423544).

The spelling of 123201321223 in words is "one hundred twenty-three billion, two hundred one million, three hundred twenty-one thousand, two hundred twenty-three".