213266116109 has 2 divisors, whose sum is σ = 213266116110. Its totient is φ = 213266116108.

The previous prime is 213266116103. The next prime is 213266116153. The reversal of 213266116109 is 901611662312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179773456009 + 33492660100 = 423997^2 + 183010^2 .

It is a cyclic number.

It is not a de Polignac number, because 213266116109 - 2⁴ = 213266116093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213266116103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106633058054 + 106633058055.

It is an arithmetic number, because the mean of its divisors is an integer number (106633058055).

Almost surely, 2^213266116109 is an apocalyptic number.

It is an amenable number.

213266116109 is a deficient number, since it is larger than the sum of its proper divisors (1).

213266116109 is an equidigital number, since it uses as much as digits as its factorization.

213266116109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 213266116109 in words is "two hundred thirteen billion, two hundred sixty-six million, one hundred sixteen thousand, one hundred nine".