121112101210111 has 8 divisors (see below), whose sum is σ = 132126613565904. Its totient is φ = 110098309077120.

The previous prime is 121112101210109. The next prime is 121112101210129. The reversal of 121112101210111 is 111012101211121.

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 121112101210111 - 2¹ = 121112101210109 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 (121112101210181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179704060 + ... + 180376753.

It is an arithmetic number, because the mean of its divisors is an integer number (16515826695738).

Almost surely, 2^{121112101210111} is an apocalyptic number.

121112101210111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121112101210111 is a deficient number, since it is larger than the sum of its proper divisors (11014512355793).

121112101210111 is a wasteful number, since it uses less digits than its factorization.

121112101210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360111401.

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

Adding to 121112101210111 its reverse (111012101211121), we get a palindrome (232124202421232).

The spelling of 121112101210111 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred one million, two hundred ten thousand, one hundred eleven".