221212321002269 has 2 divisors, whose sum is σ = 221212321002270. Its totient is φ = 221212321002268.

The previous prime is 221212321002251. The next prime is 221212321002331. The reversal of 221212321002269 is 962200123212122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184099796082244 + 37112524920025 = 13568338^2 + 6092005^2 .

It is a cyclic number.

It is not a de Polignac number, because 221212321002269 - 2³² = 221208026034973 is a prime.

It is a super-2 number, since 2×221212321002269² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221212321002209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606160501134 + 110606160501135.

It is an arithmetic number, because the mean of its divisors is an integer number (110606160501135).

Almost surely, 2^{221212321002269} is an apocalyptic number.

It is an amenable number.

221212321002269 is a deficient number, since it is larger than the sum of its proper divisors (1).

221212321002269 is an equidigital number, since it uses as much as digits as its factorization.

221212321002269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 221212321002269 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred twenty-one million, two thousand, two hundred sixty-nine".