12121010000123 has 8 divisors (see below), whose sum is σ = 12124891225920. Its totient is φ = 12117129298560.

The previous prime is 12121010000111. The next prime is 12121010000129. The reversal of 12121010000123 is 32100001012121.

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 12121010000123 - 2¹⁰ = 12121009999099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121010000098 and 12121010000107.

It is not an unprimeable number, because it can be changed into a prime (12121010000129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49033811 + ... + 49280387.

It is an arithmetic number, because the mean of its divisors is an integer number (1515611403240).

Almost surely, 2^{12121010000123} is an apocalyptic number.

12121010000123 is a deficient number, since it is larger than the sum of its proper divisors (3881225797).

12121010000123 is a wasteful number, since it uses less digits than its factorization.

12121010000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262117.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12121010000123 its reverse (32100001012121), we get a palindrome (44221011012244).

The spelling of 12121010000123 in words is "twelve trillion, one hundred twenty-one billion, ten million, one hundred twenty-three", and thus it is an aban number.