167016221 has 2 divisors, whose sum is σ = 167016222. Its totient is φ = 167016220.

The previous prime is 167016209. The next prime is 167016253. The reversal of 167016221 is 122610761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118504996 + 48511225 = 10886^2 + 6965^2 .

It is a cyclic number.

It is not a de Polignac number, because 167016221 - 2²² = 162821917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167016281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83508110 + 83508111.

It is an arithmetic number, because the mean of its divisors is an integer number (83508111).

Almost surely, 2^167016221 is an apocalyptic number.

It is an amenable number.

167016221 is a deficient number, since it is larger than the sum of its proper divisors (1).

167016221 is an equidigital number, since it uses as much as digits as its factorization.

167016221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 167016221 is about 12923.4755774134. The cubic root of 167016221 is about 550.7056738170.

Adding to 167016221 its reverse (122610761), we get a palindrome (289626982).

It can be divided in two parts, 16701 and 6221, that added together give a palindrome (22922).

The spelling of 167016221 in words is "one hundred sixty-seven million, sixteen thousand, two hundred twenty-one".