121212302213 has 8 divisors (see below), whose sum is σ = 123064103232. Its totient is φ = 119361756096.

The previous prime is 121212302203. The next prime is 121212302243. The reversal of 121212302213 is 312203212121.

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 121212302213 - 2²⁰ = 121211253637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212302203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118145 + ... + 506342.

It is an arithmetic number, because the mean of its divisors is an integer number (15383012904).

Almost surely, 2^121212302213 is an apocalyptic number.

It is an amenable number.

121212302213 is a deficient number, since it is larger than the sum of its proper divisors (1851801019).

121212302213 is an equidigital number, since it uses as much as digits as its factorization.

121212302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627451.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121212302213 its reverse (312203212121), we get a palindrome (433415514334).

The spelling of 121212302213 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred two thousand, two hundred thirteen".