1212200012269 has 2 divisors, whose sum is σ = 1212200012270. Its totient is φ = 1212200012268.

The previous prime is 1212200012213. The next prime is 1212200012329. The reversal of 1212200012269 is 9622100022121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1172427687369 + 39772324900 = 1082787^2 + 199430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212200012269 - 2¹³ = 1212200004077 is a prime.

It is a super-2 number, since 2×1212200012269² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212200012669) 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, 606100006134 + 606100006135.

It is an arithmetic number, because the mean of its divisors is an integer number (606100006135).

Almost surely, 2^{1212200012269} is an apocalyptic number.

It is an amenable number.

1212200012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212200012269 is an equidigital number, since it uses as much as digits as its factorization.

1212200012269 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 1212200012269 in words is "one trillion, two hundred twelve billion, two hundred million, twelve thousand, two hundred sixty-nine".