12111321120212 has 6 divisors (see below), whose sum is σ = 21194811960378. Its totient is φ = 6055660560104.

The previous prime is 12111321120203. The next prime is 12111321120247. The reversal of 12111321120212 is 21202112311121.

It can be written as a sum of positive squares in only one way, i.e., 7342181445316 + 4769139674896 = 2709646^2 + 2183836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1513915140023 + ... + 1513915140030.

It is an arithmetic number, because the mean of its divisors is an integer number (3532468660063).

Almost surely, 2^{12111321120212} is an apocalyptic number.

It is an amenable number.

12111321120212 is a deficient number, since it is larger than the sum of its proper divisors (9083490840166).

12111321120212 is a wasteful number, since it uses less digits than its factorization.

12111321120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027830280057 (or 3027830280055 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 12111321120212 its reverse (21202112311121), we get a palindrome (33313433431333).

The spelling of 12111321120212 in words is "twelve trillion, one hundred eleven billion, three hundred twenty-one million, one hundred twenty thousand, two hundred twelve".