111101212221120 has 168 divisors, whose sum is σ = 416882048703120. Its totient is φ = 26933627197440.

The previous prime is 111101212221053. The next prime is 111101212221133. The reversal of 111101212221120 is 21122212101111.

It is a happy number.

111101212221120 is a `hidden beast` number, since 1 + 1 + 110 + 1 + 212 + 221 + 120 = 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 = 111101212221093 and 111101212221102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1753459675 + ... + 1753523034.

It is an arithmetic number, because the mean of its divisors is an integer number (2481440766090).

Almost surely, 2^{111101212221120} is an apocalyptic number.

111101212221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101212221120 is an abundant number, since it is smaller than the sum of its proper divisors (305780836482000).

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

111101212221120 is a wasteful number, since it uses less digits than its factorization.

111101212221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506982743 (or 3506982730 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111101212221120 its reverse (21122212101111), we get a palindrome (132223424322231).

The spelling of 111101212221120 in words is "one hundred eleven trillion, one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred twenty".