121212202222222 has 8 divisors (see below), whose sum is σ = 182137843411200. Its totient is φ = 60499587751824.

The previous prime is 121212202222207. The next prime is 121212202222247. The reversal of 121212202222222 is 222222202212121.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53256678222 + ... + 53256680497.

It is an arithmetic number, because the mean of its divisors is an integer number (22767230426400).

Almost surely, 2^{121212202222222} is an apocalyptic number.

121212202222222 is a deficient number, since it is larger than the sum of its proper divisors (60925641188978).

121212202222222 is a wasteful number, since it uses less digits than its factorization.

121212202222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106513359290.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 121212202222222 its reverse (222222202212121), we get a palindrome (343434404434343).

The spelling of 121212202222222 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-two".