1212112211112 has 64 divisors (see below), whose sum is σ = 3673067313600. Its totient is φ = 367306729920.

The previous prime is 1212112211099. The next prime is 1212112211119. The reversal of 1212112211112 is 2111122112121.

It is a happy number.

1212112211112 is a `hidden beast` number, since 121 + 211 + 221 + 1 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1212112211119) by changing a digit.

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, 255071743 + ... + 255076494.

It is an arithmetic number, because the mean of its divisors is an integer number (57391676775).

Almost surely, 2^{1212112211112} is an apocalyptic number.

1212112211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212112211112 is an abundant number, since it is smaller than the sum of its proper divisors (2460955102488).

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

1212112211112 is a wasteful number, since it uses less digits than its factorization.

1212112211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510148263 (or 510148253 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 1212112211112 its reverse (2111122112121), we get a palindrome (3323234323233).

The spelling of 1212112211112 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred eleven thousand, one hundred twelve".