33122161 has 2 divisors, whose sum is σ = 33122162. Its totient is φ = 33122160.

The previous prime is 33122153. The next prime is 33122179. The reversal of 33122161 is 16122133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 8520561 = 4960^2 + 2919^2 .

It is an emirp because it is prime and its reverse (16122133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33122161 - 2³ = 33122153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33122101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16561080 + 16561081.

It is an arithmetic number, because the mean of its divisors is an integer number (16561081).

Almost surely, 2^33122161 is an apocalyptic number.

It is an amenable number.

33122161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33122161 is an equidigital number, since it uses as much as digits as its factorization.

33122161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 33122161 is about 5755.1855747665. The cubic root of 33122161 is about 321.1487391489.

Adding to 33122161 its reverse (16122133), we get a palindrome (49244294).

The spelling of 33122161 in words is "thirty-three million, one hundred twenty-two thousand, one hundred sixty-one".