1100303331161 has 2 divisors, whose sum is σ = 1100303331162. Its totient is φ = 1100303331160.

The previous prime is 1100303331157. The next prime is 1100303331247. The reversal of 1100303331161 is 1611333030011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 699658639936 + 400644691225 = 836456^2 + 632965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100303331161 - 2² = 1100303331157 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100303331661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550151665580 + 550151665581.

It is an arithmetic number, because the mean of its divisors is an integer number (550151665581).

Almost surely, 2^{1100303331161} is an apocalyptic number.

It is an amenable number.

1100303331161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100303331161 is an equidigital number, since it uses as much as digits as its factorization.

1100303331161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1100303331161 its reverse (1611333030011), we get a palindrome (2711636361172).

The spelling of 1100303331161 in words is "one trillion, one hundred billion, three hundred three million, three hundred thirty-one thousand, one hundred sixty-one".