121101102211111 has 16 divisors (see below), whose sum is σ = 134021847231360. Its totient is φ = 108509395163680.

The previous prime is 121101102211097. The next prime is 121101102211129. The reversal of 121101102211111 is 111112201101121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121101102211111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101102211181) 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, 260909341 + ... + 261373078.

It is an arithmetic number, because the mean of its divisors is an integer number (8376365451960).

Almost surely, 2^{121101102211111} is an apocalyptic number.

121101102211111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121101102211111 is a deficient number, since it is larger than the sum of its proper divisors (12920745020249).

121101102211111 is a wasteful number, since it uses less digits than its factorization.

121101102211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522282734.

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

Adding to 121101102211111 its reverse (111112201101121), we get a palindrome (232213303312232).

The spelling of 121101102211111 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred two million, two hundred eleven thousand, one hundred eleven".