121111121112 has 32 divisors (see below), whose sum is σ = 303497015280. Its totient is φ = 40274478720.

The previous prime is 121111121107. The next prime is 121111121113. The reversal of 121111121112 is 211121111121.

121111121112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121111121091 and 121111121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5983123 + ... + 6003330.

Almost surely, 2^121111121112 is an apocalyptic number.

121111121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121111121112 is an abundant number, since it is smaller than the sum of its proper divisors (182385894168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121111121112 is a wasteful number, since it uses less digits than its factorization.

121111121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986883 (or 11986879 counting only the distinct ones).

The product of its digits is 8, while the sum is 15.

Adding to 121111121112 its reverse (211121111121), we get a palindrome (332232232233).

Subtracting 121111121112 from its reverse (211121111121), we obtain a palindrome (90009990009).

The spelling of 121111121112 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twelve".