112121211121111 has 8 divisors (see below), whose sum is σ = 112864065486848. Its totient is φ = 111378361095000.

The previous prime is 112121211121081. The next prime is 112121211121123. The reversal of 112121211121111 is 111121112121211.

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 112121211121111 - 2¹⁵ = 112121211088343 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 (112121211122111) 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, 63422506 + ... + 65166376.

It is an arithmetic number, because the mean of its divisors is an integer number (14108008185856).

Almost surely, 2^{112121211121111} is an apocalyptic number.

112121211121111 is a deficient number, since it is larger than the sum of its proper divisors (742854365737).

112121211121111 is a wasteful number, since it uses less digits than its factorization.

112121211121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169813.

The product of its digits is 16, while the sum is 19.

Adding to 112121211121111 its reverse (111121112121211), we get a palindrome (223242323242322).

The spelling of 112121211121111 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred eleven".