121121121112 has 32 divisors (see below), whose sum is σ = 239082739200. Its totient is φ = 57366468000.

The previous prime is 121121121103. The next prime is 121121121133. The reversal of 121121121112 is 211121121121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410037 + ... + 1493467.

It is an arithmetic number, because the mean of its divisors is an integer number (7471335600).

Almost surely, 2^121121121112 is an apocalyptic number.

It is an amenable number.

121121121112 is a deficient number, since it is larger than the sum of its proper divisors (117961618088).

121121121112 is a wasteful number, since it uses less digits than its factorization.

121121121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93007 (or 93003 counting only the distinct ones).

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

Adding to 121121121112 its reverse (211121121121), we get a palindrome (332242242233).

Subtracting 121121121112 from its reverse (211121121121), we obtain a palindrome (90000000009).

The spelling of 121121121112 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".