213320120249 has 2 divisors, whose sum is σ = 213320120250. Its totient is φ = 213320120248.

The previous prime is 213320120219. The next prime is 213320120329. The reversal of 213320120249 is 942021023312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211294670224 + 2025450025 = 459668^2 + 45005^2 .

It is a cyclic number.

It is not a de Polignac number, because 213320120249 - 2⁸ = 213320119993 is a prime.

It is not a weakly prime, because it can be changed into another prime (213320120219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106660060124 + 106660060125.

It is an arithmetic number, because the mean of its divisors is an integer number (106660060125).

Almost surely, 2^213320120249 is an apocalyptic number.

It is an amenable number.

213320120249 is a deficient number, since it is larger than the sum of its proper divisors (1).

213320120249 is an equidigital number, since it uses as much as digits as its factorization.

213320120249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 213320120249 in words is "two hundred thirteen billion, three hundred twenty million, one hundred twenty thousand, two hundred forty-nine".