1223463500209 has 2 divisors, whose sum is σ = 1223463500210. Its totient is φ = 1223463500208.

The previous prime is 1223463500201. The next prime is 1223463500249. The reversal of 1223463500209 is 9020053643221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1141264890000 + 82198610209 = 1068300^2 + 286703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223463500209 - 2³ = 1223463500201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223463500201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611731750104 + 611731750105.

It is an arithmetic number, because the mean of its divisors is an integer number (611731750105).

Almost surely, 2^{1223463500209} is an apocalyptic number.

It is an amenable number.

1223463500209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223463500209 is an equidigital number, since it uses as much as digits as its factorization.

1223463500209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 1223463500209 in words is "one trillion, two hundred twenty-three billion, four hundred sixty-three million, five hundred thousand, two hundred nine".