1123303121201 has 2 divisors, whose sum is σ = 1123303121202. Its totient is φ = 1123303121200.

The previous prime is 1123303121183. The next prime is 1123303121221. The reversal of 1123303121201 is 1021213033211.

It is a happy number.

It is an a-pointer prime, because the next prime (1123303121221) can be obtained adding 1123303121201 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 686909440000 + 436393681201 = 828800^2 + 660601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123303121201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1123303121221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561651560600 + 561651560601.

It is an arithmetic number, because the mean of its divisors is an integer number (561651560601).

Almost surely, 2^{1123303121201} is an apocalyptic number.

It is an amenable number.

1123303121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123303121201 is an equidigital number, since it uses as much as digits as its factorization.

1123303121201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1123303121201 its reverse (1021213033211), we get a palindrome (2144516154412).

The spelling of 1123303121201 in words is "one trillion, one hundred twenty-three billion, three hundred three million, one hundred twenty-one thousand, two hundred one".