12012201121212 has 72 divisors (see below), whose sum is σ = 30501796053456. Its totient is φ = 3985923684864.

The previous prime is 12012201121159. The next prime is 12012201121223. The reversal of 12012201121212 is 21212110221021.

12012201121212 is a `hidden beast` number, since 1 + 201 + 220 + 11 + 21 + 212 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67518118 + ... + 67695794.

It is an arithmetic number, because the mean of its divisors is an integer number (423636056298).

Almost surely, 2^{12012201121212} is an apocalyptic number.

12012201121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012201121212 is an abundant number, since it is smaller than the sum of its proper divisors (18489594932244).

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

12012201121212 is a wasteful number, since it uses less digits than its factorization.

12012201121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186187 (or 186182 counting only the distinct ones).

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

Adding to 12012201121212 its reverse (21212110221021), we get a palindrome (33224311342233).

The spelling of 12012201121212 in words is "twelve trillion, twelve billion, two hundred one million, one hundred twenty-one thousand, two hundred twelve".