1001222179 has 2 divisors, whose sum is σ = 1001222180. Its totient is φ = 1001222178.

The previous prime is 1001222171. The next prime is 1001222197. The reversal of 1001222179 is 9712221001.

Together with next prime (1001222197) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001222179 - 2³ = 1001222171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001222171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500611089 + 500611090.

It is an arithmetic number, because the mean of its divisors is an integer number (500611090).

Almost surely, 2^1001222179 is an apocalyptic number.

1001222179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001222179 is an equidigital number, since it uses as much as digits as its factorization.

1001222179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1001222179 is about 31642.0950475786. The cubic root of 1001222179 is about 1000.4072271435.

The spelling of 1001222179 in words is "one billion, one million, two hundred twenty-two thousand, one hundred seventy-nine".