1001012269 has 2 divisors, whose sum is σ = 1001012270. Its totient is φ = 1001012268.

The previous prime is 1001012249. The next prime is 1001012273. The reversal of 1001012269 is 9622101001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 748679044 + 252333225 = 27362^2 + 15885^2 .

It is an emirp because it is prime and its reverse (9622101001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001012269 - 2⁵ = 1001012237 is a prime.

It is a super-2 number, since 2×1001012269² = 2004051125377056722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001012249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500506134 + 500506135.

It is an arithmetic number, because the mean of its divisors is an integer number (500506135).

Almost surely, 2^1001012269 is an apocalyptic number.

It is an amenable number.

1001012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001012269 is an equidigital number, since it uses as much as digits as its factorization.

1001012269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1001012269 is about 31638.7779315194. Note that the first 3 decimals coincide. The cubic root of 1001012269 is about 1000.3373092097.

The spelling of 1001012269 in words is "one billion, one million, twelve thousand, two hundred sixty-nine".