123013012121 has 8 divisors (see below), whose sum is σ = 130262758080. Its totient is φ = 115840803888.

The previous prime is 123013012117. The next prime is 123013012123. The reversal of 123013012121 is 121210310321.

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 123013012121 - 2² = 123013012117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123013012121.

It is not an unprimeable number, because it can be changed into a prime (123013012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19381166 + ... + 19387511.

It is an arithmetic number, because the mean of its divisors is an integer number (16282844760).

Almost surely, 2^123013012121 is an apocalyptic number.

It is an amenable number.

123013012121 is a deficient number, since it is larger than the sum of its proper divisors (7249745959).

123013012121 is a wasteful number, since it uses less digits than its factorization.

123013012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38768863.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123013012121 its reverse (121210310321), we get a palindrome (244223322442).

The spelling of 123013012121 in words is "one hundred twenty-three billion, thirteen million, twelve thousand, one hundred twenty-one".