1212122210112 has 84 divisors (see below), whose sum is σ = 3790177612416. Its totient is φ = 367309758720.

The previous prime is 1212122210071. The next prime is 1212122210119. The reversal of 1212122210112 is 2110122212121.

1212122210112 is a `hidden beast` number, since 121 + 212 + 221 + 0 + 112 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212122210119) 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 11 ways as a sum of consecutive naturals, for example, 95647248 + ... + 95659919.

Almost surely, 2^{1212122210112} is an apocalyptic number.

1212122210112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212122210112 is an abundant number, since it is smaller than the sum of its proper divisors (2578055402304).

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

1212122210112 is a wasteful number, since it uses less digits than its factorization.

1212122210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191307196 (or 191307183 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1212122210112 its reverse (2110122212121), we get a palindrome (3322244422233).

The spelling of 1212122210112 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred ten thousand, one hundred twelve".