111200200211221 has 12 divisors (see below), whose sum is σ = 122228692687276. Its totient is φ = 101090782235520.

The previous prime is 111200200211207. The next prime is 111200200211227. The reversal of 111200200211221 is 122112002002111.

It can be written as a sum of positive squares in 2 ways, for example, as 4261623496900 + 106938576714321 = 2064370^2 + 10341111^2 .

It is not a de Polignac number, because 111200200211221 - 2⁹ = 111200200210709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111200200211195 and 111200200211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200200211227) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 44553805 + ... + 46983421.

Almost surely, 2^{111200200211221} is an apocalyptic number.

111200200211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111200200211221 is a deficient number, since it is larger than the sum of its proper divisors (11028492476055).

111200200211221 is a wasteful number, since it uses less digits than its factorization.

111200200211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807892 (or 2807881 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111200200211221 its reverse (122112002002111), we get a palindrome (233312202213332).

The spelling of 111200200211221 in words is "one hundred eleven trillion, two hundred billion, two hundred million, two hundred eleven thousand, two hundred twenty-one".