111021122221200 has 120 divisors (see below), whose sum is σ = 395152957277600. Its totient is φ = 29605632589440.

The previous prime is 111021122221073. The next prime is 111021122221211. The reversal of 111021122221200 is 2122221120111.

111021122221200 is a `hidden beast` number, since 1 + 1 + 10 + 211 + 22 + 221 + 200 = 666.

111021122221200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

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

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 23 ways as a sum of consecutive naturals, for example, 5139855970 + ... + 5139877569.

Almost surely, 2^{111021122221200} is an apocalyptic number.

111021122221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021122221200 is an abundant number, since it is smaller than the sum of its proper divisors (284131835056400).

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

111021122221200 is a wasteful number, since it uses less digits than its factorization.

111021122221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10279733566 (or 10279733549 counting only the distinct ones).

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

Adding to 111021122221200 its reverse (2122221120111), we get a palindrome (113143343341311).

The spelling of 111021122221200 in words is "one hundred eleven trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred".