11670121 has 2 divisors, whose sum is σ = 11670122. Its totient is φ = 11670120.

The previous prime is 11670119. The next prime is 11670137. The reversal of 11670121 is 12107611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5934096 + 5736025 = 2436^2 + 2395^2 .

It is a cyclic number.

It is not a de Polignac number, because 11670121 - 2¹ = 11670119 is a prime.

Together with 11670119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11670181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5835060 + 5835061.

It is an arithmetic number, because the mean of its divisors is an integer number (5835061).

Almost surely, 2^11670121 is an apocalyptic number.

It is an amenable number.

11670121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11670121 is an equidigital number, since it uses as much as digits as its factorization.

11670121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 11670121 is about 3416.1558805183. The cubic root of 11670121 is about 226.8254527060.

Adding to 11670121 its reverse (12107611), we get a palindrome (23777732).

The spelling of 11670121 in words is "eleven million, six hundred seventy thousand, one hundred twenty-one".