11331100122161 has 2 divisors, whose sum is σ = 11331100122162. Its totient is φ = 11331100122160.

The previous prime is 11331100122143. The next prime is 11331100122263. The reversal of 11331100122161 is 16122100113311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8213703793936 + 3117396328225 = 2865956^2 + 1765615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331100122161 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331100122761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665550061080 + 5665550061081.

It is an arithmetic number, because the mean of its divisors is an integer number (5665550061081).

Almost surely, 2^{11331100122161} is an apocalyptic number.

It is an amenable number.

11331100122161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331100122161 is an equidigital number, since it uses as much as digits as its factorization.

11331100122161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 11331100122161 its reverse (16122100113311), we get a palindrome (27453200235472).

The spelling of 11331100122161 in words is "eleven trillion, three hundred thirty-one billion, one hundred million, one hundred twenty-two thousand, one hundred sixty-one".