1212012211112 has 16 divisors (see below), whose sum is σ = 2273674736340. Its totient is φ = 605698948096.

The previous prime is 1212012211079. The next prime is 1212012211129. The reversal of 1212012211112 is 2111122102121.

It can be written as a sum of positive squares in 2 ways, for example, as 1208429709796 + 3582501316 = 1099286^2 + 59854^2 .

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 3 ways as a sum of consecutive naturals, for example, 38377913 + ... + 38409480.

Almost surely, 2^{1212012211112} is an apocalyptic number.

It is an amenable number.

1212012211112 is a deficient number, since it is larger than the sum of its proper divisors (1061662525228).

1212012211112 is a wasteful number, since it uses less digits than its factorization.

1212012211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76789372 (or 76789368 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1212012211112 its reverse (2111122102121), we get a palindrome (3323134313233).

The spelling of 1212012211112 in words is "one trillion, two hundred twelve billion, twelve million, two hundred eleven thousand, one hundred twelve".