1121111212112 has 80 divisors (see below), whose sum is σ = 2279602369920. Its totient is φ = 533109620736.

The previous prime is 1121111212099. The next prime is 1121111212201. The reversal of 1121111212112 is 2112121111211.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180326828 + ... + 180333044.

It is an arithmetic number, because the mean of its divisors is an integer number (28495029624).

Almost surely, 2^{1121111212112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121111212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139801184960).

1121111212112 is an abundant number, since it is smaller than the sum of its proper divisors (1158491157808).

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

1121111212112 is a wasteful number, since it uses less digits than its factorization.

1121111212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980 (or 8974 counting only the distinct ones).

The product of its digits is 16, while the sum is 17.

Adding to 1121111212112 its reverse (2112121111211), we get a palindrome (3233232323323).

The spelling of 1121111212112 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twelve thousand, one hundred twelve".