221124091171 has 2 divisors, whose sum is σ = 221124091172. Its totient is φ = 221124091170.

The previous prime is 221124091141. The next prime is 221124091187. The reversal of 221124091171 is 171190421122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221124091171 - 2⁷ = 221124091043 is a prime.

It is not a weakly prime, because it can be changed into another prime (221124091141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110562045585 + 110562045586.

It is an arithmetic number, because the mean of its divisors is an integer number (110562045586).

Almost surely, 2^221124091171 is an apocalyptic number.

221124091171 is a deficient number, since it is larger than the sum of its proper divisors (1).

221124091171 is an equidigital number, since it uses as much as digits as its factorization.

221124091171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 221124091171 in words is "two hundred twenty-one billion, one hundred twenty-four million, ninety-one thousand, one hundred seventy-one".