13212113009 has 2 divisors, whose sum is σ = 13212113010. Its totient is φ = 13212113008.

The previous prime is 13212112993. The next prime is 13212113027. The reversal of 13212113009 is 90031121231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9820215409 + 3391897600 = 99097^2 + 58240^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212113009 - 2⁴ = 13212112993 is a prime.

It is not a weakly prime, because it can be changed into another prime (13212113059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606056504 + 6606056505.

It is an arithmetic number, because the mean of its divisors is an integer number (6606056505).

Almost surely, 2^13212113009 is an apocalyptic number.

It is an amenable number.

13212113009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212113009 is an equidigital number, since it uses as much as digits as its factorization.

13212113009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 13212113009 in words is "thirteen billion, two hundred twelve million, one hundred thirteen thousand, nine".