121102101121111 has 4 divisors (see below), whose sum is σ = 132111383041224. Its totient is φ = 110092819201000.

The previous prime is 121102101121009. The next prime is 121102101121181. The reversal of 121102101121111 is 111121101201121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121102101121111 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 (121102101121181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5504640960040 + ... + 5504640960061.

It is an arithmetic number, because the mean of its divisors is an integer number (33027845760306).

Almost surely, 2^{121102101121111} is an apocalyptic number.

121102101121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121102101121111 is a deficient number, since it is larger than the sum of its proper divisors (11009281920113).

121102101121111 is a wasteful number, since it uses less digits than its factorization.

121102101121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009281920112.

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

Adding to 121102101121111 its reverse (111121101201121), we get a palindrome (232223202322232).

The spelling of 121102101121111 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred one million, one hundred twenty-one thousand, one hundred eleven".