11012212171 has 2 divisors, whose sum is σ = 11012212172. Its totient is φ = 11012212170.

The previous prime is 11012212157. The next prime is 11012212177. The reversal of 11012212171 is 17121221011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11012212171 - 2⁵ = 11012212139 is a prime.

It is not a weakly prime, because it can be changed into another prime (11012212177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506106085 + 5506106086.

It is an arithmetic number, because the mean of its divisors is an integer number (5506106086).

Almost surely, 2^11012212171 is an apocalyptic number.

11012212171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012212171 is an equidigital number, since it uses as much as digits as its factorization.

11012212171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 11012212171 its reverse (17121221011), we get a palindrome (28133433182).

The spelling of 11012212171 in words is "eleven billion, twelve million, two hundred twelve thousand, one hundred seventy-one".