11123161201 has 2 divisors, whose sum is σ = 11123161202. Its totient is φ = 11123161200.

The previous prime is 11123161187. The next prime is 11123161219. The reversal of 11123161201 is 10216132111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10465290000 + 657871201 = 102300^2 + 25649^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123161201 - 2⁷ = 11123161073 is a prime.

It is not a weakly prime, because it can be changed into another prime (11123161501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561580600 + 5561580601.

It is an arithmetic number, because the mean of its divisors is an integer number (5561580601).

Almost surely, 2^11123161201 is an apocalyptic number.

It is an amenable number.

11123161201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123161201 is an equidigital number, since it uses as much as digits as its factorization.

11123161201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11123161201 its reverse (10216132111), we get a palindrome (21339293312).

The spelling of 11123161201 in words is "eleven billion, one hundred twenty-three million, one hundred sixty-one thousand, two hundred one".