121110112210111 has 16 divisors (see below), whose sum is σ = 123318920724480. Its totient is φ = 118925181161280.

The previous prime is 121110112210103. The next prime is 121110112210121. The reversal of 121110112210111 is 111012211011121.

It is a cyclic number.

It is not a de Polignac number, because 121110112210111 - 2³ = 121110112210103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110112210121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3676471 + ... + 15991768.

It is an arithmetic number, because the mean of its divisors is an integer number (7707432545280).

Almost surely, 2^{121110112210111} is an apocalyptic number.

121110112210111 is a deficient number, since it is larger than the sum of its proper divisors (2208808514369).

121110112210111 is a wasteful number, since it uses less digits than its factorization.

121110112210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668846.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 121110112210111 its reverse (111012211011121), we get a palindrome (232122323221232).

The spelling of 121110112210111 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred twelve million, two hundred ten thousand, one hundred eleven".