121212322222 has 8 divisors (see below), whose sum is σ = 181819994616. Its totient is φ = 60605657352.

The previous prime is 121212322219. The next prime is 121212322229. The reversal of 121212322222 is 222223212121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 121212322193 and 121212322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212322229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244653 + ... + 549799.

It is an arithmetic number, because the mean of its divisors is an integer number (22727499327).

Almost surely, 2^121212322222 is an apocalyptic number.

121212322222 is a deficient number, since it is larger than the sum of its proper divisors (60607672394).

121212322222 is a wasteful number, since it uses less digits than its factorization.

121212322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503762.

The product of its digits is 768, while the sum is 22.

Adding to 121212322222 its reverse (222223212121), we get a palindrome (343435534343).

The spelling of 121212322222 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred twenty-two thousand, two hundred twenty-two".