121212100222222 has 16 divisors (see below), whose sum is σ = 183428213274432. Its totient is φ = 60069368620800.

The previous prime is 121212100222217. The next prime is 121212100222247. The reversal of 121212100222222 is 222222001212121.

121212100222222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×121212100222222³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121212100222193 and 121212100222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40454203 + ... + 43347049.

It is an arithmetic number, because the mean of its divisors is an integer number (11464263329652).

Almost surely, 2^{121212100222222} is an apocalyptic number.

121212100222222 is a deficient number, since it is larger than the sum of its proper divisors (62216113052210).

121212100222222 is a wasteful number, since it uses less digits than its factorization.

121212100222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078363.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 121212100222222 its reverse (222222001212121), we get a palindrome (343434101434343).

The spelling of 121212100222222 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred million, two hundred twenty-two thousand, two hundred twenty-two".