32121161 has 2 divisors, whose sum is σ = 32121162. Its totient is φ = 32121160.

The previous prime is 32121121. The next prime is 32121253. The reversal of 32121161 is 16112123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29365561 + 2755600 = 5419^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 32121161 - 2¹⁸ = 31859017 is a prime.

It is not a weakly prime, because it can be changed into another prime (32121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060580 + 16060581.

It is an arithmetic number, because the mean of its divisors is an integer number (16060581).

Almost surely, 2^32121161 is an apocalyptic number.

It is an amenable number.

32121161 is a deficient number, since it is larger than the sum of its proper divisors (1).

32121161 is an equidigital number, since it uses as much as digits as its factorization.

32121161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 32121161 is about 5667.5533521970. The cubic root of 32121161 is about 317.8803955359.

Adding to 32121161 its reverse (16112123), we get a palindrome (48233284).

The spelling of 32121161 in words is "thirty-two million, one hundred twenty-one thousand, one hundred sixty-one".