111011120130161 has 2 divisors, whose sum is σ = 111011120130162. Its totient is φ = 111011120130160.

The previous prime is 111011120130107. The next prime is 111011120130193. The reversal of 111011120130161 is 161031021110111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96244438680625 + 14766681449536 = 9810425^2 + 3842744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111011120130161 is a prime.

It is not a weakly prime, because it can be changed into another prime (111011120130061) 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, 55505560065080 + 55505560065081.

It is an arithmetic number, because the mean of its divisors is an integer number (55505560065081).

Almost surely, 2^{111011120130161} is an apocalyptic number.

It is an amenable number.

111011120130161 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011120130161 is an equidigital number, since it uses as much as digits as its factorization.

111011120130161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 111011120130161 its reverse (161031021110111), we get a palindrome (272042141240272).

The spelling of 111011120130161 in words is "one hundred eleven trillion, eleven billion, one hundred twenty million, one hundred thirty thousand, one hundred sixty-one".