123320220121 has 8 divisors (see below), whose sum is σ = 141288862464. Its totient is φ = 105439444800.

The previous prime is 123320220073. The next prime is 123320220143. The reversal of 123320220121 is 121022023321.

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 123320220121 - 2²¹ = 123318122969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123320220161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21963745 + ... + 21969358.

It is an arithmetic number, because the mean of its divisors is an integer number (17661107808).

Almost surely, 2^123320220121 is an apocalyptic number.

It is an amenable number.

123320220121 is a deficient number, since it is larger than the sum of its proper divisors (17968642343).

123320220121 is an equidigital number, since it uses as much as digits as its factorization.

123320220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43933511.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123320220121 its reverse (121022023321), we get a palindrome (244342243442).

The spelling of 123320220121 in words is "one hundred twenty-three billion, three hundred twenty million, two hundred twenty thousand, one hundred twenty-one".