1112011220161 has 2 divisors, whose sum is σ = 1112011220162. Its totient is φ = 1112011220160.

The previous prime is 1112011220147. The next prime is 1112011220191. The reversal of 1112011220161 is 1610221102111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1080936581761 + 31074638400 = 1039681^2 + 176280^2 .

It is an emirp because it is prime and its reverse (1610221102111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112011220161 - 2¹⁵ = 1112011187393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112011220191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556005610080 + 556005610081.

It is an arithmetic number, because the mean of its divisors is an integer number (556005610081).

Almost surely, 2^{1112011220161} is an apocalyptic number.

It is an amenable number.

1112011220161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112011220161 is an equidigital number, since it uses as much as digits as its factorization.

1112011220161 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 1112011220161 its reverse (1610221102111), we get a palindrome (2722232322272).

The spelling of 1112011220161 in words is "one trillion, one hundred twelve billion, eleven million, two hundred twenty thousand, one hundred sixty-one".