121707716 has 72 divisors (see below), whose sum is σ = 243492480. Its totient is φ = 53149824.

The previous prime is 121707713. The next prime is 121707757. The reversal of 121707716 is 617707121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121707713) 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 23 ways as a sum of consecutive naturals, for example, 1540565 + ... + 1540643.

It is an arithmetic number, because the mean of its divisors is an integer number (3381840).

Almost surely, 2^121707716 is an apocalyptic number.

It is an amenable number.

121707716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

121707716 is a wasteful number, since it uses less digits than its factorization.

121707716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 32.

The square root of 121707716 is about 11032.1220080273. The cubic root of 121707716 is about 495.5711748410.

The spelling of 121707716 in words is "one hundred twenty-one million, seven hundred seven thousand, seven hundred sixteen".