121065667 has 4 divisors (see below), whose sum is σ = 121949496. Its totient is φ = 120181840.

The previous prime is 121065649. The next prime is 121065673. The reversal of 121065667 is 766560121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121065667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121065617) 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, 441709 + ... + 441982.

It is an arithmetic number, because the mean of its divisors is an integer number (30487374).

Almost surely, 2^121065667 is an apocalyptic number.

121065667 is a deficient number, since it is larger than the sum of its proper divisors (883829).

121065667 is an equidigital number, since it uses as much as digits as its factorization.

121065667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883828.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 121065667 is about 11002.9844587730. The cubic root of 121065667 is about 494.6982032742.

The spelling of 121065667 in words is "one hundred twenty-one million, sixty-five thousand, six hundred sixty-seven".