1100111333161 has 2 divisors, whose sum is σ = 1100111333162. Its totient is φ = 1100111333160.

The previous prime is 1100111333119. The next prime is 1100111333201. The reversal of 1100111333161 is 1613331110011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 895377707536 + 204733625625 = 946244^2 + 452475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100111333161 - 2¹⁷ = 1100111202089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100111333261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550055666580 + 550055666581.

It is an arithmetic number, because the mean of its divisors is an integer number (550055666581).

Almost surely, 2^{1100111333161} is an apocalyptic number.

It is an amenable number.

1100111333161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100111333161 is an equidigital number, since it uses as much as digits as its factorization.

1100111333161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 1100111333161 its reverse (1613331110011), we get a palindrome (2713442443172).

The spelling of 1100111333161 in words is "one trillion, one hundred billion, one hundred eleven million, three hundred thirty-three thousand, one hundred sixty-one".