123201323121 has 8 divisors (see below), whose sum is σ = 167052641760. Its totient is φ = 80742109952.

The previous prime is 123201323111. The next prime is 123201323129. The reversal of 123201323121 is 121323102321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123201323121 - 2³⁵ = 88841584753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123201323129) 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 7 ways as a sum of consecutive naturals, for example, 348026160 + ... + 348026513.

It is an arithmetic number, because the mean of its divisors is an integer number (20881580220).

Almost surely, 2^123201323121 is an apocalyptic number.

It is an amenable number.

123201323121 is a deficient number, since it is larger than the sum of its proper divisors (43851318639).

123201323121 is an equidigital number, since it uses as much as digits as its factorization.

123201323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696052735.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123201323121 its reverse (121323102321), we get a palindrome (244524425442).

The spelling of 123201323121 in words is "one hundred twenty-three billion, two hundred one million, three hundred twenty-three thousand, one hundred twenty-one".