111443561221212 has 36 divisors (see below), whose sum is σ = 307314062762616. Its totient is φ = 33770776127520.

The previous prime is 111443561221183. The next prime is 111443561221219. The reversal of 111443561221212 is 212122165344111.

111443561221212 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 4 + 3 + 5 + 612 + 21 + 2 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111443561221219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140711566803 + ... + 140711567594.

It is an arithmetic number, because the mean of its divisors is an integer number (8536501743406).

Almost surely, 2^{111443561221212} is an apocalyptic number.

111443561221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111443561221212 is an abundant number, since it is smaller than the sum of its proper divisors (195870501541404).

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

111443561221212 is a wasteful number, since it uses less digits than its factorization.

111443561221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281423134418 (or 281423134413 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The spelling of 111443561221212 in words is "one hundred eleven trillion, four hundred forty-three billion, five hundred sixty-one million, two hundred twenty-one thousand, two hundred twelve".