1212100000112 has 40 divisors (see below), whose sum is σ = 2557289038800. Its totient is φ = 554354260992.

The previous prime is 1212100000063. The next prime is 1212100000121. The reversal of 1212100000112 is 2110000012121.

It is a junction number, because it is equal to n+sod(n) for n = 1212100000093 and 1212100000102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68735513 + ... + 68753144.

It is an arithmetic number, because the mean of its divisors is an integer number (63932225970).

Almost surely, 2^{1212100000112} is an apocalyptic number.

It is an amenable number.

1212100000112 is an abundant number, since it is smaller than the sum of its proper divisors (1345189038688).

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

1212100000112 is a wasteful number, since it uses less digits than its factorization.

1212100000112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137488713 (or 137488707 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212100000112 its reverse (2110000012121), we get a palindrome (3322100012233).

The spelling of 1212100000112 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred twelve", and thus it is an aban number.