121660530 has 32 divisors (see below), whose sum is σ = 299109888. Its totient is φ = 31651200.

The previous prime is 121660507. The next prime is 121660531. The reversal of 121660530 is 35066121.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121660530.

It is not an unprimeable number, because it can be changed into a prime (121660531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48226 + ... + 50685.

It is an arithmetic number, because the mean of its divisors is an integer number (9347184).

Almost surely, 2^121660530 is an apocalyptic number.

121660530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121660530 is an abundant number, since it is smaller than the sum of its proper divisors (177449358).

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

121660530 is a wasteful number, since it uses less digits than its factorization.

121660530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98962.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 121660530 is about 11029.9832275484. The cubic root of 121660530 is about 495.5071223583.

The spelling of 121660530 in words is "one hundred twenty-one million, six hundred sixty thousand, five hundred thirty".