121161966 has 8 divisors (see below), whose sum is σ = 242323944. Its totient is φ = 40387320.

The previous prime is 121161959. The next prime is 121161979. The reversal of 121161966 is 669161121.

It is a sphenic number, since it is the product of 3 distinct primes.

121161966 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10096825 + ... + 10096836.

It is an arithmetic number, because the mean of its divisors is an integer number (30290493).

Almost surely, 2^121161966 is an apocalyptic number.

121161966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121161966 is a wasteful number, since it uses less digits than its factorization.

121161966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20193666.

The product of its digits is 3888, while the sum is 33.

The square root of 121161966 is about 11007.3596289028. The cubic root of 121161966 is about 494.8293340837.

The spelling of 121161966 in words is "one hundred twenty-one million, one hundred sixty-one thousand, nine hundred sixty-six".