1285822109113 has 2 divisors, whose sum is σ = 1285822109114. Its totient is φ = 1285822109112.

The previous prime is 1285822108981. The next prime is 1285822109123. The reversal of 1285822109113 is 3119012285821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772575955369 + 513246153744 = 878963^2 + 716412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285822109113 - 2⁹ = 1285822108601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1285822109113.

It is not a weakly prime, because it can be changed into another prime (1285822109123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642911054556 + 642911054557.

It is an arithmetic number, because the mean of its divisors is an integer number (642911054557).

Almost surely, 2^{1285822109113} is an apocalyptic number.

It is an amenable number.

1285822109113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285822109113 is an equidigital number, since it uses as much as digits as its factorization.

1285822109113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 1285822109113 in words is "one trillion, two hundred eighty-five billion, eight hundred twenty-two million, one hundred nine thousand, one hundred thirteen".