121023166 has 16 divisors (see below), whose sum is σ = 198380160. Its totient is φ = 54915480.

The previous prime is 121023157. The next prime is 121023169. The reversal of 121023166 is 661320121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023169) 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 7 ways as a sum of consecutive naturals, for example, 9175 + ... + 18061.

It is an arithmetic number, because the mean of its divisors is an integer number (12398760).

Almost surely, 2^121023166 is an apocalyptic number.

121023166 is a deficient number, since it is larger than the sum of its proper divisors (77356994).

121023166 is a wasteful number, since it uses less digits than its factorization.

121023166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9519.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121023166 is about 11001.0529496044. The cubic root of 121023166 is about 494.6403073414.

Adding to 121023166 its reverse (661320121), we get a palindrome (782343287).

The spelling of 121023166 in words is "one hundred twenty-one million, twenty-three thousand, one hundred sixty-six".