11212121121112 has 32 divisors (see below), whose sum is σ = 22364852753520. Its totient is φ = 5251286154240.

The previous prime is 11212121121083. The next prime is 11212121121133. The reversal of 11212121121112 is 21112112121211.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11212121121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195331653 + ... + 195389044.

Almost surely, 2^{11212121121112} is an apocalyptic number.

It is an amenable number.

11212121121112 is a deficient number, since it is larger than the sum of its proper divisors (11152731632408).

11212121121112 is a wasteful number, since it uses less digits than its factorization.

11212121121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390720931 (or 390720927 counting only the distinct ones).

The product of its digits is 32, while the sum is 19.

Adding to 11212121121112 its reverse (21112112121211), we get a palindrome (32324233242323).

The spelling of 11212121121112 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".