121102120211111 has 8 divisors (see below), whose sum is σ = 130420065140064. Its totient is φ = 111784517742240.

The previous prime is 121102120211099. The next prime is 121102120211119. The reversal of 121102120211111 is 111112021201121.

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

It is a cyclic number.

It is not a de Polignac number, because 121102120211111 - 2³⁴ = 121084940341927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121102120211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102120211119) 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 7 ways as a sum of consecutive naturals, for example, 84880331 + ... + 86295276.

It is an arithmetic number, because the mean of its divisors is an integer number (16302508142508).

Almost surely, 2^{121102120211111} is an apocalyptic number.

121102120211111 is a deficient number, since it is larger than the sum of its proper divisors (9317944928953).

121102120211111 is a wasteful number, since it uses less digits than its factorization.

121102120211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171230041.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121102120211111 its reverse (111112021201121), we get a palindrome (232214141412232).

The spelling of 121102120211111 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred twenty million, two hundred eleven thousand, one hundred eleven".