12121230030023 has 4 divisors (see below), whose sum is σ = 12121425542160. Its totient is φ = 12121034517888.

The previous prime is 12121230030017. The next prime is 12121230030157. The reversal of 12121230030023 is 32003003212121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121230030023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121230029977 and 12121230030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121230530023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97663043 + ... + 97787076.

It is an arithmetic number, because the mean of its divisors is an integer number (3030356385540).

Almost surely, 2^{12121230030023} is an apocalyptic number.

12121230030023 is a deficient number, since it is larger than the sum of its proper divisors (195512137).

12121230030023 is an equidigital number, since it uses as much as digits as its factorization.

12121230030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195512136.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12121230030023 its reverse (32003003212121), we get a palindrome (44124233242144).

The spelling of 12121230030023 in words is "twelve trillion, one hundred twenty-one billion, two hundred thirty million, thirty thousand, twenty-three".