11112201221111 has 8 divisors (see below), whose sum is σ = 11114191005840. Its totient is φ = 11110211636608.

The previous prime is 11112201221087. The next prime is 11112201221119. The reversal of 11112201221111 is 11112210221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112201221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11112201221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112201221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146566865 + ... + 146642661.

It is an arithmetic number, because the mean of its divisors is an integer number (1389273875730).

Almost surely, 2^{11112201221111} is an apocalyptic number.

11112201221111 is a deficient number, since it is larger than the sum of its proper divisors (1989784729).

11112201221111 is a wasteful number, since it uses less digits than its factorization.

11112201221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100113.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11112201221111 its reverse (11112210221111), we get a palindrome (22224411442222).

Subtracting 11112201221111 from its reverse (11112210221111), we obtain a square (9000000 = 3000²).

The spelling of 11112201221111 in words is "eleven trillion, one hundred twelve billion, two hundred one million, two hundred twenty-one thousand, one hundred eleven".