121632166 has 4 divisors (see below), whose sum is σ = 182448252. Its totient is φ = 60816082.

The previous prime is 121632163. The next prime is 121632169. The reversal of 121632166 is 661236121.

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

It is an interprime number because it is at equal distance from previous prime (121632163) and next prime (121632169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121632163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30408040 + ... + 30408043.

It is an arithmetic number, because the mean of its divisors is an integer number (45612063).

Almost surely, 2^121632166 is an apocalyptic number.

121632166 is a deficient number, since it is larger than the sum of its proper divisors (60816086).

121632166 is an equidigital number, since it uses as much as digits as its factorization.

121632166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60816085.

The product of its digits is 2592, while the sum is 28.

The square root of 121632166 is about 11028.6973845509. The cubic root of 121632166 is about 495.4686117683.

Adding to 121632166 its reverse (661236121), we get a palindrome (782868287).

The spelling of 121632166 in words is "one hundred twenty-one million, six hundred thirty-two thousand, one hundred sixty-six".