1212011201112 has 64 divisors (see below), whose sum is σ = 3220191871200. Its totient is φ = 378825246720.

The previous prime is 1212011201101. The next prime is 1212011201113. The reversal of 1212011201112 is 2111021102121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212011201091 and 1212011201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212011201113) 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 15 ways as a sum of consecutive naturals, for example, 5411839 + ... + 5631342.

Almost surely, 2^{1212011201112} is an apocalyptic number.

1212011201112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212011201112 is an abundant number, since it is smaller than the sum of its proper divisors (2008180670088).

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

1212011201112 is a wasteful number, since it uses less digits than its factorization.

1212011201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11043476 (or 11043472 counting only the distinct ones).

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

Adding to 1212011201112 its reverse (2111021102121), we get a palindrome (3323032303233).

The spelling of 1212011201112 in words is "one trillion, two hundred twelve billion, eleven million, two hundred one thousand, one hundred twelve".