111300121021212 has 72 divisors (see below), whose sum is σ = 291622036436640. Its totient is φ = 35749514263680.

The previous prime is 111300121021211. The next prime is 111300121021283. The reversal of 111300121021212 is 212120121003111.

It is a happy number.

111300121021212 is a `hidden beast` number, since 1 + 11 + 300 + 121 + 0 + 21 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111300121021211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105448339 + ... + 106498602.

It is an arithmetic number, because the mean of its divisors is an integer number (4050306061620).

Almost surely, 2^{111300121021212} is an apocalyptic number.

111300121021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111300121021212 is an abundant number, since it is smaller than the sum of its proper divisors (180321915415428).

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

111300121021212 is a wasteful number, since it uses less digits than its factorization.

111300121021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211947483 (or 211947478 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111300121021212 its reverse (212120121003111), we get a palindrome (323420242024323).

The spelling of 111300121021212 in words is "one hundred eleven trillion, three hundred billion, one hundred twenty-one million, twenty-one thousand, two hundred twelve".