67224121 has 2 divisors, whose sum is σ = 67224122. Its totient is φ = 67224120.

The previous prime is 67224067. The next prime is 67224161. The reversal of 67224121 is 12142276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57836025 + 9388096 = 7605^2 + 3064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67224121 is a prime.

It is not a weakly prime, because it can be changed into another prime (67224161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33612060 + 33612061.

It is an arithmetic number, because the mean of its divisors is an integer number (33612061).

Almost surely, 2^67224121 is an apocalyptic number.

It is an amenable number.

67224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

67224121 is an equidigital number, since it uses as much as digits as its factorization.

67224121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 67224121 is about 8199.0317111230. The cubic root of 67224121 is about 406.6071807493.

Adding to 67224121 its reverse (12142276), we get a palindrome (79366397).

The spelling of 67224121 in words is "sixty-seven million, two hundred twenty-four thousand, one hundred twenty-one".