111020111121212 has 24 divisors (see below), whose sum is σ = 205730258746320. Its totient is φ = 52240561747200.

The previous prime is 111020111121211. The next prime is 111020111121221. The reversal of 111020111121212 is 212121111020111.

111020111121212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×111020111121212³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020111121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64716287 + ... + 66409622.

It is an arithmetic number, because the mean of its divisors is an integer number (8572094114430).

Almost surely, 2^{111020111121212} is an apocalyptic number.

It is an amenable number.

111020111121212 is a deficient number, since it is larger than the sum of its proper divisors (94710147625108).

111020111121212 is a wasteful number, since it uses less digits than its factorization.

111020111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131138381 (or 131138379 counting only the distinct ones).

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

Adding to 111020111121212 its reverse (212121111020111), we get a palindrome (323141222141323).

The spelling of 111020111121212 in words is "one hundred eleven trillion, twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".