11121022110161 has 2 divisors, whose sum is σ = 11121022110162. Its totient is φ = 11121022110160.

The previous prime is 11121022110157. The next prime is 11121022110199. The reversal of 11121022110161 is 16101122012111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9824657693761 + 1296364416400 = 3134431^2 + 1138580^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121022110161 - 2² = 11121022110157 is a prime.

It is not a weakly prime, because it can be changed into another prime (11121022113161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560511055080 + 5560511055081.

It is an arithmetic number, because the mean of its divisors is an integer number (5560511055081).

Almost surely, 2^{11121022110161} is an apocalyptic number.

It is an amenable number.

11121022110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121022110161 is an equidigital number, since it uses as much as digits as its factorization.

11121022110161 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 20.

Adding to 11121022110161 its reverse (16101122012111), we get a palindrome (27222144122272).

The spelling of 11121022110161 in words is "eleven trillion, one hundred twenty-one billion, twenty-two million, one hundred ten thousand, one hundred sixty-one".