121212201122222 has 16 divisors (see below), whose sum is σ = 208146335160960. Its totient is φ = 51859588600248.

The previous prime is 121212201122189. The next prime is 121212201122227. The reversal of 121212201122222 is 222221102212121.

121212201122222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212201122227) 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, 7374791072 + ... + 7374807507.

It is an arithmetic number, because the mean of its divisors is an integer number (13009145947560).

Almost surely, 2^{121212201122222} is an apocalyptic number.

121212201122222 is a deficient number, since it is larger than the sum of its proper divisors (86934134038738).

121212201122222 is a wasteful number, since it uses less digits than its factorization.

121212201122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14749599175.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121212201122222 its reverse (222221102212121), we get a palindrome (343433303334343).

The spelling of 121212201122222 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred one million, one hundred twenty-two thousand, two hundred twenty-two".