121716770 has 64 divisors (see below), whose sum is σ = 274337280. Its totient is φ = 37911552.

The previous prime is 121716743. The next prime is 121716797. The reversal of 121716770 is 77617121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121716743) and next prime (121716797).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32747 + ... + 36273.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 2^121716770 is an apocalyptic number.

121716770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121716770 is an abundant number, since it is smaller than the sum of its proper divisors (152620510).

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

121716770 is a wasteful number, since it uses less digits than its factorization.

121716770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587.

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

The square root of 121716770 is about 11032.5323475619. The cubic root of 121716770 is about 495.5834632707.

The spelling of 121716770 in words is "one hundred twenty-one million, seven hundred sixteen thousand, seven hundred seventy".