111101012011212 has 12 divisors (see below), whose sum is σ = 259235694692856. Its totient is φ = 37033670670400.

The previous prime is 111101012011207. The next prime is 111101012011243. The reversal of 111101012011212 is 212110210101111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 111101012011191 and 111101012011200.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4629208833789 + ... + 4629208833812.

It is an arithmetic number, because the mean of its divisors is an integer number (21602974557738).

Almost surely, 2^{111101012011212} is an apocalyptic number.

111101012011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111101012011212 is an abundant number, since it is smaller than the sum of its proper divisors (148134682681644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111101012011212 is a wasteful number, since it uses less digits than its factorization.

111101012011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258417667608 (or 9258417667606 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111101012011212 its reverse (212110210101111), we get a palindrome (323211222112323).

The spelling of 111101012011212 in words is "one hundred eleven trillion, one hundred one billion, twelve million, eleven thousand, two hundred twelve".