1223489395109 has 2 divisors, whose sum is σ = 1223489395110. Its totient is φ = 1223489395108.

The previous prime is 1223489395103. The next prime is 1223489395171. The reversal of 1223489395109 is 9015939843221.

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., 1011040305025 + 212449090084 = 1005505^2 + 460922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223489395109 - 2³² = 1219194427813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223489395103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611744697554 + 611744697555.

It is an arithmetic number, because the mean of its divisors is an integer number (611744697555).

Almost surely, 2^{1223489395109} is an apocalyptic number.

It is an amenable number.

1223489395109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223489395109 is an equidigital number, since it uses as much as digits as its factorization.

1223489395109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 1223489395109 in words is "one trillion, two hundred twenty-three billion, four hundred eighty-nine million, three hundred ninety-five thousand, one hundred nine".