102012269 has 2 divisors, whose sum is σ = 102012270. Its totient is φ = 102012268.

The previous prime is 102012247. The next prime is 102012271. The reversal of 102012269 is 962210201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52027369 + 49984900 = 7213^2 + 7070^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012269 - 2⁸ = 102012013 is a prime.

It is a super-2 number, since 2×102012269² = 20813006053056722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 102012271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102012569) 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, 51006134 + 51006135.

It is an arithmetic number, because the mean of its divisors is an integer number (51006135).

Almost surely, 2^102012269 is an apocalyptic number.

It is an amenable number.

102012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012269 is an equidigital number, since it uses as much as digits as its factorization.

102012269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 102012269 is about 10100.1123261081. The cubic root of 102012269 is about 467.2516056796.

The spelling of 102012269 in words is "one hundred two million, twelve thousand, two hundred sixty-nine".