67321121 has 4 divisors (see below), whose sum is σ = 76938432. Its totient is φ = 57703812.

The previous prime is 67321091. The next prime is 67321147. The reversal of 67321121 is 12112376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67321121 - 2¹⁸ = 67058977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67326121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4808645 + ... + 4808658.

It is an arithmetic number, because the mean of its divisors is an integer number (19234608).

Almost surely, 2^67321121 is an apocalyptic number.

It is an amenable number.

67321121 is a deficient number, since it is larger than the sum of its proper divisors (9617311).

67321121 is an equidigital number, since it uses as much as digits as its factorization.

67321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9617310.

The product of its digits is 504, while the sum is 23.

The square root of 67321121 is about 8204.9449114543. The cubic root of 67321121 is about 406.8026559296.

Adding to 67321121 its reverse (12112376), we get a palindrome (79433497).

The spelling of 67321121 in words is "sixty-seven million, three hundred twenty-one thousand, one hundred twenty-one".