121212230013 has 24 divisors (see below), whose sum is σ = 200426091008. Its totient is φ = 69150000672.

The previous prime is 121212229961. The next prime is 121212230021. The reversal of 121212230013 is 310032212121.

It is not a de Polignac number, because 121212230013 - 2⁶ = 121212229949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212230063) 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 23 ways as a sum of consecutive naturals, for example, 1546606 + ... + 1623087.

Almost surely, 2^121212230013 is an apocalyptic number.

It is an amenable number.

121212230013 is a deficient number, since it is larger than the sum of its proper divisors (79213860995).

121212230013 is a wasteful number, since it uses less digits than its factorization.

121212230013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170313 (or 3170310 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121212230013 its reverse (310032212121), we get a palindrome (431244442134).

The spelling of 121212230013 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred thirty thousand, thirteen".