121112112012 has 12 divisors (see below), whose sum is σ = 282594928056. Its totient is φ = 40370704000.

The previous prime is 121112111987. The next prime is 121112112031. The reversal of 121112112012 is 210211211121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 121112111982 and 121112112000.

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 3 ways as a sum of consecutive naturals, for example, 5046337989 + ... + 5046338012.

It is an arithmetic number, because the mean of its divisors is an integer number (23549577338).

Almost surely, 2^121112112012 is an apocalyptic number.

121112112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121112112012 is an abundant number, since it is smaller than the sum of its proper divisors (161482816044).

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

121112112012 is a wasteful number, since it uses less digits than its factorization.

121112112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092676008 (or 10092676006 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121112112012 its reverse (210211211121), we get a palindrome (331323323133).

The spelling of 121112112012 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, twelve".