67270121 has 2 divisors, whose sum is σ = 67270122. Its totient is φ = 67270120.

The previous prime is 67270109. The next prime is 67270153. The reversal of 67270121 is 12107276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53290000 + 13980121 = 7300^2 + 3739^2 .

It is a cyclic number.

It is not a de Polignac number, because 67270121 - 2⁶ = 67270057 is a prime.

It is a super-5 number, since 5×67270121⁵ (a number of 40 digits) contains 55555 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (67270321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33635060 + 33635061.

It is an arithmetic number, because the mean of its divisors is an integer number (33635061).

Almost surely, 2^67270121 is an apocalyptic number.

It is an amenable number.

67270121 is a deficient number, since it is larger than the sum of its proper divisors (1).

67270121 is an equidigital number, since it uses as much as digits as its factorization.

67270121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 67270121 is about 8201.8364407003. The cubic root of 67270121 is about 406.6999037453.

Adding to 67270121 its reverse (12107276), we get a palindrome (79377397).

The spelling of 67270121 in words is "sixty-seven million, two hundred seventy thousand, one hundred twenty-one".