1212210121489 has 2 divisors, whose sum is σ = 1212210121490. Its totient is φ = 1212210121488.

The previous prime is 1212210121481. The next prime is 1212210121531. The reversal of 1212210121489 is 9841210122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753328523025 + 458881598464 = 867945^2 + 677408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212210121489 - 2³ = 1212210121481 is a prime.

It is a super-3 number, since 3×1212210121489³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1212210121481) 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, 606105060744 + 606105060745.

It is an arithmetic number, because the mean of its divisors is an integer number (606105060745).

Almost surely, 2^{1212210121489} is an apocalyptic number.

It is an amenable number.

1212210121489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210121489 is an equidigital number, since it uses as much as digits as its factorization.

1212210121489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 1212210121489 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, four hundred eighty-nine".