13212115489 has 2 divisors, whose sum is σ = 13212115490. Its totient is φ = 13212115488.

The previous prime is 13212115487. The next prime is 13212115529. The reversal of 13212115489 is 98451121231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13157237025 + 54878464 = 114705^2 + 7408^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212115489 - 2¹ = 13212115487 is a prime.

Together with 13212115487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13212115487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606057744 + 6606057745.

It is an arithmetic number, because the mean of its divisors is an integer number (6606057745).

Almost surely, 2^13212115489 is an apocalyptic number.

It is an amenable number.

13212115489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212115489 is an equidigital number, since it uses as much as digits as its factorization.

13212115489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The spelling of 13212115489 in words is "thirteen billion, two hundred twelve million, one hundred fifteen thousand, four hundred eighty-nine".