111121101021212 has 12 divisors (see below), whose sum is σ = 194478660533976. Its totient is φ = 55555769440080.

The previous prime is 111121101021193. The next prime is 111121101021221. The reversal of 111121101021212 is 212120101121111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195215338 + ... + 1195308305.

It is an arithmetic number, because the mean of its divisors is an integer number (16206555044498).

Almost surely, 2^{111121101021212} is an apocalyptic number.

It is an amenable number.

111121101021212 is a deficient number, since it is larger than the sum of its proper divisors (83357559512764).

111121101021212 is a wasteful number, since it uses less digits than its factorization.

111121101021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390535268 (or 2390535266 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111121101021212 its reverse (212120101121111), we get a palindrome (323241202142323).

The spelling of 111121101021212 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred one million, twenty-one thousand, two hundred twelve".