111201122012220 has 72 divisors (see below), whose sum is σ = 346426558505664. Its totient is φ = 28852183006848.

The previous prime is 111201122012207. The next prime is 111201122012231. The reversal of 111201122012220 is 22210221102111.

111201122012220 is a `hidden beast` number, since 1 + 11 + 201 + 1 + 220 + 12 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 111201122012193 and 111201122012202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8348425924 + ... + 8348439243.

Almost surely, 2^{111201122012220} is an apocalyptic number.

111201122012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201122012220 is an abundant number, since it is smaller than the sum of its proper divisors (235225436493444).

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

111201122012220 is a wasteful number, since it uses less digits than its factorization.

111201122012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16696865219 (or 16696865214 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111201122012220 its reverse (22210221102111), we get a palindrome (133411343114331).

The spelling of 111201122012220 in words is "one hundred eleven trillion, two hundred one billion, one hundred twenty-two million, twelve thousand, two hundred twenty".