11221012211191 has 2 divisors, whose sum is σ = 11221012211192. Its totient is φ = 11221012211190.

The previous prime is 11221012211131. The next prime is 11221012211237. The reversal of 11221012211191 is 19111221012211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221012211191 - 2¹³ = 11221012202999 is a prime.

It is a super-2 number, since 2×11221012211191² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221012211111) 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 as a sum of consecutive naturals, namely, 5610506105595 + 5610506105596.

It is an arithmetic number, because the mean of its divisors is an integer number (5610506105596).

Almost surely, 2^{11221012211191} is an apocalyptic number.

11221012211191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221012211191 is an equidigital number, since it uses as much as digits as its factorization.

11221012211191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 11221012211191 in words is "eleven trillion, two hundred twenty-one billion, twelve million, two hundred eleven thousand, one hundred ninety-one".