123002112121 has 8 divisors (see below), whose sum is σ = 140599111104. Its totient is φ = 105411430320.

The previous prime is 123002112113. The next prime is 123002112161. The reversal of 123002112121 is 121211200321.

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

It is not a de Polignac number, because 123002112121 - 2³ = 123002112113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123002112095 and 123002112104.

It is not an unprimeable number, because it can be changed into a prime (123002112161) 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, 1537495 + ... + 1615516.

It is an arithmetic number, because the mean of its divisors is an integer number (17574888888).

Almost surely, 2^123002112121 is an apocalyptic number.

It is an amenable number.

123002112121 is a deficient number, since it is larger than the sum of its proper divisors (17596998983).

123002112121 is an equidigital number, since it uses as much as digits as its factorization.

123002112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158591.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 123002112121 its reverse (121211200321), we get a palindrome (244213312442).

The spelling of 123002112121 in words is "one hundred twenty-three billion, two million, one hundred twelve thousand, one hundred twenty-one".