111122121201212 has 48 divisors (see below), whose sum is σ = 214701568752384. Its totient is φ = 49900708368000.

The previous prime is 111122121201163. The next prime is 111122121201331. The reversal of 111122121201212 is 212102121221111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271946537 + ... + 272354847.

It is an arithmetic number, because the mean of its divisors is an integer number (4472949349008).

Almost surely, 2^{111122121201212} is an apocalyptic number.

It is an amenable number.

111122121201212 is a deficient number, since it is larger than the sum of its proper divisors (103579447551172).

111122121201212 is a wasteful number, since it uses less digits than its factorization.

111122121201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482930 (or 482928 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111122121201212 its reverse (212102121221111), we get a palindrome (323224242422323).

The spelling of 111122121201212 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred one thousand, two hundred twelve".