1212331442269 has 2 divisors, whose sum is σ = 1212331442270. Its totient is φ = 1212331442268.

The previous prime is 1212331442191. The next prime is 1212331442351. The reversal of 1212331442269 is 9622441332121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868366787044 + 343964655225 = 931862^2 + 586485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212331442269 - 2²⁷ = 1212197224541 is a prime.

It is a super-2 number, since 2×1212331442269² (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 (1212331842269) 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, 606165721134 + 606165721135.

It is an arithmetic number, because the mean of its divisors is an integer number (606165721135).

Almost surely, 2^{1212331442269} is an apocalyptic number.

It is an amenable number.

1212331442269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212331442269 is an equidigital number, since it uses as much as digits as its factorization.

1212331442269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The spelling of 1212331442269 in words is "one trillion, two hundred twelve billion, three hundred thirty-one million, four hundred forty-two thousand, two hundred sixty-nine".