1111011110161 has 2 divisors, whose sum is σ = 1111011110162. Its totient is φ = 1111011110160.

The previous prime is 1111011110147. The next prime is 1111011110177. The reversal of 1111011110161 is 1610111101111.

It is an a-pointer prime, because the next prime (1111011110177) can be obtained adding 1111011110161 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1111008753936 + 2356225 = 1054044^2 + 1535^2 .It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1910111101111 and 1111011110191.

It is a cyclic number.

It is not a de Polignac number, because 1111011110161 - 2⁵ = 1111011110129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111011110191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555505555080 + 555505555081.

It is an arithmetic number, because the mean of its divisors is an integer number (555505555081).

Almost surely, 2^{1111011110161} is an apocalyptic number.

It is an amenable number.

1111011110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111011110161 is an equidigital number, since it uses as much as digits as its factorization.

1111011110161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 16.

Adding to 1111011110161 its reverse (1610111101111), we get a palindrome (2721122211272).

The spelling of 1111011110161 in words is "one trillion, one hundred eleven billion, eleven million, one hundred ten thousand, one hundred sixty-one".