111200101202161 has 2 divisors, whose sum is σ = 111200101202162. Its totient is φ = 111200101202160.

The previous prime is 111200101202153. The next prime is 111200101202167. The reversal of 111200101202161 is 161202101002111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94856516203761 + 16343584998400 = 9739431^2 + 4042720^2 .

It is a cyclic number.

It is not a de Polignac number, because 111200101202161 - 2³ = 111200101202153 is a prime.

It is not a weakly prime, because it can be changed into another prime (111200101202167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600050601080 + 55600050601081.

It is an arithmetic number, because the mean of its divisors is an integer number (55600050601081).

Almost surely, 2^{111200101202161} is an apocalyptic number.

It is an amenable number.

111200101202161 is a deficient number, since it is larger than the sum of its proper divisors (1).

111200101202161 is an equidigital number, since it uses as much as digits as its factorization.

111200101202161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 111200101202161 its reverse (161202101002111), we get a palindrome (272402202204272).

The spelling of 111200101202161 in words is "one hundred eleven trillion, two hundred billion, one hundred one million, two hundred two thousand, one hundred sixty-one".