111011120100161 has 2 divisors, whose sum is σ = 111011120100162. Its totient is φ = 111011120100160.

The previous prime is 111011120100137. The next prime is 111011120100317. The reversal of 111011120100161 is 161001021110111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109717768890625 + 1293351209536 = 10474625^2 + 1137256^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011120100161 - 2¹⁰ = 111011120099137 is a prime.

It is not a weakly prime, because it can be changed into another prime (111011120130161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505560050080 + 55505560050081.

It is an arithmetic number, because the mean of its divisors is an integer number (55505560050081).

Almost surely, 2^{111011120100161} is an apocalyptic number.

It is an amenable number.

111011120100161 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011120100161 is an equidigital number, since it uses as much as digits as its factorization.

111011120100161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 17.

Adding to 111011120100161 its reverse (161001021110111), we get a palindrome (272012141210272).

The spelling of 111011120100161 in words is "one hundred eleven trillion, eleven billion, one hundred twenty million, one hundred thousand, one hundred sixty-one".