121111213112 has 64 divisors (see below), whose sum is σ = 236511100800. Its totient is φ = 58071162240.

The previous prime is 121111213081. The next prime is 121111213159. The reversal of 121111213112 is 211312111121.

121111213112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 26774483 + ... + 26779005.

It is an arithmetic number, because the mean of its divisors is an integer number (3695485950).

Almost surely, 2^121111213112 is an apocalyptic number.

It is an amenable number.

121111213112 is a deficient number, since it is larger than the sum of its proper divisors (115399887688).

121111213112 is a wasteful number, since it uses less digits than its factorization.

121111213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316 (or 5312 counting only the distinct ones).

The product of its digits is 24, while the sum is 17.

Adding to 121111213112 its reverse (211312111121), we get a palindrome (332423324233).

The spelling of 121111213112 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred thirteen thousand, one hundred twelve".