121110222210111 has 12 divisors (see below), whose sum is σ = 178659051204192. Its totient is φ = 79022272647456.

The previous prime is 121110222210071. The next prime is 121110222210121. The reversal of 121110222210111 is 111012222011121.

It is a happy number.

121110222210111 is a `hidden beast` number, since 1 + 211 + 10 + 222 + 210 + 1 + 11 = 666.

It is not a de Polignac number, because 121110222210111 - 2¹⁰ = 121110222209087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110222210121) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 143156290606 + ... + 143156291451.

It is an arithmetic number, because the mean of its divisors is an integer number (14888254267016).

Almost surely, 2^{121110222210111} is an apocalyptic number.

121110222210111 is a deficient number, since it is larger than the sum of its proper divisors (57548828994081).

121110222210111 is a wasteful number, since it uses less digits than its factorization.

121110222210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286312582110 (or 286312582107 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121110222210111 its reverse (111012222011121), we get a palindrome (232122444221232).

The spelling of 121110222210111 in words is "one hundred twenty-one trillion, one hundred ten billion, two hundred twenty-two million, two hundred ten thousand, one hundred eleven".