1212212101112 has 16 divisors (see below), whose sum is σ = 2278454902800. Its totient is φ = 604624127040.

The previous prime is 1212212101031. The next prime is 1212212101141. The reversal of 1212212101112 is 2111012122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185236964 + ... + 185243507.

It is an arithmetic number, because the mean of its divisors is an integer number (142403431425).

Almost surely, 2^{1212212101112} is an apocalyptic number.

It is an amenable number.

1212212101112 is a deficient number, since it is larger than the sum of its proper divisors (1066242801688).

1212212101112 is a wasteful number, since it uses less digits than its factorization.

1212212101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370480886 (or 370480882 counting only the distinct ones).

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

Adding to 1212212101112 its reverse (2111012122121), we get a palindrome (3323224223233).

The spelling of 1212212101112 in words is "one trillion, two hundred twelve billion, two hundred twelve million, one hundred one thousand, one hundred twelve".