1201122000817 has 2 divisors, whose sum is σ = 1201122000818. Its totient is φ = 1201122000816.

The previous prime is 1201122000787. The next prime is 1201122000863. The reversal of 1201122000817 is 7180002211021.

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., 1036240525681 + 164881475136 = 1017959^2 + 406056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201122000817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201122000791 and 1201122000800.

It is not a weakly prime, because it can be changed into another prime (1201122000217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600561000408 + 600561000409.

It is an arithmetic number, because the mean of its divisors is an integer number (600561000409).

Almost surely, 2^{1201122000817} is an apocalyptic number.

It is an amenable number.

1201122000817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201122000817 is an equidigital number, since it uses as much as digits as its factorization.

1201122000817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 1201122000817 its reverse (7180002211021), we get a palindrome (8381124211838).

The spelling of 1201122000817 in words is "one trillion, two hundred one billion, one hundred twenty-two million, eight hundred seventeen", and thus it is an aban number.