11200111112221 has 4 divisors (see below), whose sum is σ = 11285608143744. Its totient is φ = 11114614080700.

The previous prime is 11200111112219. The next prime is 11200111112227. The reversal of 11200111112221 is 12221111100211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11200111112221 - 2¹ = 11200111112219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200111112195 and 11200111112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200111112227) 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 3 ways as a sum of consecutive naturals, for example, 42748515565 + ... + 42748515826.

It is an arithmetic number, because the mean of its divisors is an integer number (2821402035936).

Almost surely, 2^{11200111112221} is an apocalyptic number.

It is an amenable number.

11200111112221 is a deficient number, since it is larger than the sum of its proper divisors (85497031523).

11200111112221 is an equidigital number, since it uses as much as digits as its factorization.

11200111112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85497031522.

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

Adding to 11200111112221 its reverse (12221111100211), we get a palindrome (23421222212432).

The spelling of 11200111112221 in words is "eleven trillion, two hundred billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".