1212011120112 has 160 divisors (see below), whose sum is σ = 3468959597376. Its totient is φ = 362267443200.

The previous prime is 1212011120101. The next prime is 1212011120149. The reversal of 1212011120112 is 2110211102121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212011120091 and 1212011120100.

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 31 ways as a sum of consecutive naturals, for example, 5859412 + ... + 6062732.

Almost surely, 2^{1212011120112} is an apocalyptic number.

1212011120112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212011120112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1734479798688).

1212011120112 is an abundant number, since it is smaller than the sum of its proper divisors (2256948477264).

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

1212011120112 is a wasteful number, since it uses less digits than its factorization.

1212011120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203619 (or 203613 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212011120112 its reverse (2110211102121), we get a palindrome (3322222222233).

The spelling of 1212011120112 in words is "one trillion, two hundred twelve billion, eleven million, one hundred twenty thousand, one hundred twelve".