1213405320089 has 2 divisors, whose sum is σ = 1213405320090. Its totient is φ = 1213405320088.

The previous prime is 1213405320047. The next prime is 1213405320091. The reversal of 1213405320089 is 9800235043121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1143744691600 + 69660628489 = 1069460^2 + 263933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213405320089 - 2¹⁶ = 1213405254553 is a prime.

Together with 1213405320091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1213405320289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606702660044 + 606702660045.

It is an arithmetic number, because the mean of its divisors is an integer number (606702660045).

Almost surely, 2^{1213405320089} is an apocalyptic number.

It is an amenable number.

1213405320089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213405320089 is an equidigital number, since it uses as much as digits as its factorization.

1213405320089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 1213405320089 in words is "one trillion, two hundred thirteen billion, four hundred five million, three hundred twenty thousand, eighty-nine".