121212212113 has 8 divisors (see below), whose sum is σ = 121601975040. Its totient is φ = 120822850800.

The previous prime is 121212212083. The next prime is 121212212123. The reversal of 121212212113 is 311212212121.

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 121212212113 - 2²⁹ = 120675341201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510138 + ... + 708988.

It is an arithmetic number, because the mean of its divisors is an integer number (15200246880).

Almost surely, 2^121212212113 is an apocalyptic number.

It is an amenable number.

121212212113 is a deficient number, since it is larger than the sum of its proper divisors (389762927).

121212212113 is a wasteful number, since it uses less digits than its factorization.

121212212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200807.

The product of its digits is 96, while the sum is 19.

Adding to 121212212113 its reverse (311212212121), we get a palindrome (432424424234).

The spelling of 121212212113 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred thirteen".