121617770 has 8 divisors (see below), whose sum is σ = 218912004. Its totient is φ = 48647104.

The previous prime is 121617763. The next prime is 121617773. The reversal of 121617770 is 77716121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119224561 + 2393209 = 10919^2 + 1547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121617773) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6080879 + ... + 6080898.

Almost surely, 2^121617770 is an apocalyptic number.

121617770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121617770 is a deficient number, since it is larger than the sum of its proper divisors (97294234).

121617770 is a wasteful number, since it uses less digits than its factorization.

121617770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12161784.

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

The square root of 121617770 is about 11028.0447042982. The cubic root of 121617770 is about 495.4490636290.

The spelling of 121617770 in words is "one hundred twenty-one million, six hundred seventeen thousand, seven hundred seventy".