201223113209 has 2 divisors, whose sum is σ = 201223113210. Its totient is φ = 201223113208.

The previous prime is 201223113193. The next prime is 201223113227. The reversal of 201223113209 is 902311322102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192260325625 + 8962787584 = 438475^2 + 94672^2 .

It is a cyclic number.

It is not a de Polignac number, because 201223113209 - 2⁴ = 201223113193 is a prime.

It is not a weakly prime, because it can be changed into another prime (201223115209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611556604 + 100611556605.

It is an arithmetic number, because the mean of its divisors is an integer number (100611556605).

Almost surely, 2^201223113209 is an apocalyptic number.

It is an amenable number.

201223113209 is a deficient number, since it is larger than the sum of its proper divisors (1).

201223113209 is an equidigital number, since it uses as much as digits as its factorization.

201223113209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

It can be divided in two parts, 201223 and 113209, that added together give a cube (314432 = 68³).

The spelling of 201223113209 in words is "two hundred one billion, two hundred twenty-three million, one hundred thirteen thousand, two hundred nine".