11221100011111 has 2 divisors, whose sum is σ = 11221100011112. Its totient is φ = 11221100011110.

The previous prime is 11221100011097. The next prime is 11221100011117. The reversal of 11221100011111 is 11111000112211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221100011111 is a prime.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11221100011091 and 11221100011100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221100011117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610550005555 + 5610550005556.

It is an arithmetic number, because the mean of its divisors is an integer number (5610550005556).

Almost surely, 2^{11221100011111} is an apocalyptic number.

11221100011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221100011111 is an equidigital number, since it uses as much as digits as its factorization.

11221100011111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11221100011111 its reverse (11111000112211), we get a palindrome (22332100123322).

The spelling of 11221100011111 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, eleven thousand, one hundred eleven".