201212012269 has 2 divisors, whose sum is σ = 201212012270. Its totient is φ = 201212012268.

The previous prime is 201212012149. The next prime is 201212012293. The reversal of 201212012269 is 962210212102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179109243369 + 22102768900 = 423213^2 + 148670^2 .

It is a cyclic number.

It is not a de Polignac number, because 201212012269 - 2³⁵ = 166852273901 is a prime.

It is a super-2 number, since 2×201212012269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201212012299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606006134 + 100606006135.

It is an arithmetic number, because the mean of its divisors is an integer number (100606006135).

Almost surely, 2^201212012269 is an apocalyptic number.

It is an amenable number.

201212012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212012269 is an equidigital number, since it uses as much as digits as its factorization.

201212012269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 201212012269 in words is "two hundred one billion, two hundred twelve million, twelve thousand, two hundred sixty-nine".