1110210111161 has 2 divisors, whose sum is σ = 1110210111162. Its totient is φ = 1110210111160.

The previous prime is 1110210111137. The next prime is 1110210111239. The reversal of 1110210111161 is 1611110120111.

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., 650466445225 + 459743665936 = 806515^2 + 678044^2 .

It is an emirp because it is prime and its reverse (1611110120111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1110210111161 - 2³⁰ = 1109136369337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1110210116161) 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, 555105055580 + 555105055581.

It is an arithmetic number, because the mean of its divisors is an integer number (555105055581).

Almost surely, 2^{1110210111161} is an apocalyptic number.

It is an amenable number.

1110210111161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110210111161 is an equidigital number, since it uses as much as digits as its factorization.

1110210111161 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1110210111161 its reverse (1611110120111), we get a palindrome (2721320231272).

The spelling of 1110210111161 in words is "one trillion, one hundred ten billion, two hundred ten million, one hundred eleven thousand, one hundred sixty-one".