12011211201212 has 12 divisors (see below), whose sum is σ = 21375884341560. Its totient is φ = 5903815675056.

The previous prime is 12011211201211. The next prime is 12011211201221. The reversal of 12011211201212 is 21210211211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011211201211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25447481123 + ... + 25447481594.

It is an arithmetic number, because the mean of its divisors is an integer number (1781323695130).

Almost surely, 2^{12011211201212} is an apocalyptic number.

It is an amenable number.

12011211201212 is a deficient number, since it is larger than the sum of its proper divisors (9364673140348).

12011211201212 is a wasteful number, since it uses less digits than its factorization.

12011211201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50894962780 (or 50894962778 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12011211201212 its reverse (21210211211021), we get a palindrome (33221422412233).

The spelling of 12011211201212 in words is "twelve trillion, eleven billion, two hundred eleven million, two hundred one thousand, two hundred twelve".