2121212334 has 8 divisors (see below), whose sum is σ = 4242424680. Its totient is φ = 707070776.

The previous prime is 2121212323. The next prime is 2121212369. The reversal of 2121212334 is 4332121212.

It is a sphenic number, since it is the product of 3 distinct primes.

2121212334 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121212334.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 176767689 + ... + 176767700.

It is an arithmetic number, because the mean of its divisors is an integer number (530303085).

Almost surely, 2^2121212334 is an apocalyptic number.

2121212334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121212334 is a wasteful number, since it uses less digits than its factorization.

2121212334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353535394.

The product of its digits is 576, while the sum is 21.

The square root of 2121212334 is about 46056.6209572522. The cubic root of 2121212334 is about 1284.8764856780.

Adding to 2121212334 its reverse (4332121212), we get a palindrome (6453333546).

The spelling of 2121212334 in words is "two billion, one hundred twenty-one million, two hundred twelve thousand, three hundred thirty-four".