123100320121 has 8 divisors (see below), whose sum is σ = 124594979040. Its totient is φ = 121605935712.

The previous prime is 123100320089. The next prime is 123100320131. The reversal of 123100320121 is 121023001321.

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 123100320121 - 2⁵ = 123100320089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123100320095 and 123100320104.

It is not an unprimeable number, because it can be changed into a prime (123100320131) 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, 919470 + ... + 1044808.

It is an arithmetic number, because the mean of its divisors is an integer number (15574372380).

Almost surely, 2^123100320121 is an apocalyptic number.

It is an amenable number.

123100320121 is a deficient number, since it is larger than the sum of its proper divisors (1494658919).

123100320121 is a wasteful number, since it uses less digits than its factorization.

123100320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137255.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123100320121 its reverse (121023001321), we get a palindrome (244123321442).

The spelling of 123100320121 in words is "one hundred twenty-three billion, one hundred million, three hundred twenty thousand, one hundred twenty-one".