112121201111111 has 16 divisors (see below), whose sum is σ = 115295417629920. Its totient is φ = 108986383509120.

The previous prime is 112121201111041. The next prime is 112121201111123. The reversal of 112121201111111 is 111111102121211.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121201111111 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 112121201111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121201141111) 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, 61850516 + ... + 63637478.

It is an arithmetic number, because the mean of its divisors is an integer number (7205963601870).

Almost surely, 2^{112121201111111} is an apocalyptic number.

112121201111111 is a deficient number, since it is larger than the sum of its proper divisors (3174216518809).

112121201111111 is a wasteful number, since it uses less digits than its factorization.

112121201111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797986.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 112121201111111 its reverse (111111102121211), we get a palindrome (223232303232322).

The spelling of 112121201111111 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred one million, one hundred eleven thousand, one hundred eleven".