196667121 has 32 divisors (see below), whose sum is σ = 304680960. Its totient is φ = 110525184.

The previous prime is 196667087. The next prime is 196667189. The reversal of 196667121 is 121766691.

It is not a de Polignac number, because 196667121 - 2¹⁰ = 196666097 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 196667121.

It is not an unprimeable number, because it can be changed into a prime (196663121) 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 in 31 ways as a sum of consecutive naturals, for example, 424536 + ... + 424998.

It is an arithmetic number, because the mean of its divisors is an integer number (9521280).

Almost surely, 2^196667121 is an apocalyptic number.

It is an amenable number.

196667121 is a deficient number, since it is larger than the sum of its proper divisors (108013839).

196667121 is a wasteful number, since it uses less digits than its factorization.

196667121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its digits is 27216, while the sum is 39.

The square root of 196667121 is about 14023.8055106308. The cubic root of 196667121 is about 581.5368683630.

The spelling of 196667121 in words is "one hundred ninety-six million, six hundred sixty-seven thousand, one hundred twenty-one".