1212012011112 has 384 divisors, whose sum is σ = 3709719336960. Its totient is φ = 323165376000.

The previous prime is 1212012011029. The next prime is 1212012011117. The reversal of 1212012011112 is 2111102102121.

It is a happy number.

It is a super-2 number, since 2×1212012011112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212012011091 and 1212012011100.

It is not an unprimeable number, because it can be changed into a prime (1212012011117) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1567932358 + ... + 1567933130.

It is an arithmetic number, because the mean of its divisors is an integer number (9660727440).

Almost surely, 2^{1212012011112} is an apocalyptic number.

1212012011112 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 1212012011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1854859668480).

1212012011112 is an abundant number, since it is smaller than the sum of its proper divisors (2497707325848).

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

1212012011112 is a wasteful number, since it uses less digits than its factorization.

1212012011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1158 counting only the distinct ones).

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

Adding to 1212012011112 its reverse (2111102102121), we get a palindrome (3323114113233).

The spelling of 1212012011112 in words is "one trillion, two hundred twelve billion, twelve million, eleven thousand, one hundred twelve".