121304300166 has 128 divisors (see below), whose sum is σ = 315066378240. Its totient is φ = 33880218624.

The previous prime is 121304300153. The next prime is 121304300177. The reversal of 121304300166 is 661003403121.

121304300166 is a `hidden beast` number, since 1 + 213 + 0 + 430 + 0 + 16 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 3098671 + ... + 3137573.

It is an arithmetic number, because the mean of its divisors is an integer number (2461456080).

Almost surely, 2^121304300166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121304300166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157533189120).

121304300166 is an abundant number, since it is smaller than the sum of its proper divisors (193762078074).

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

121304300166 is a wasteful number, since it uses less digits than its factorization.

121304300166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39107 (or 39101 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 121304300166 its reverse (661003403121), we get a palindrome (782307703287).

The spelling of 121304300166 in words is "one hundred twenty-one billion, three hundred four million, three hundred thousand, one hundred sixty-six".