121616681303 has 8 divisors (see below), whose sum is σ = 131971597296. Its totient is φ = 111404592000.

The previous prime is 121616681299. The next prime is 121616681309. The reversal of 121616681303 is 303186616121.

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

It is not a de Polignac number, because 121616681303 - 2² = 121616681299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121616681309) 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 7 ways as a sum of consecutive naturals, for example, 35704898 + ... + 35708303.

It is an arithmetic number, because the mean of its divisors is an integer number (16496449662).

Almost surely, 2^121616681303 is an apocalyptic number.

121616681303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121616681303 is a deficient number, since it is larger than the sum of its proper divisors (10354915993).

121616681303 is a wasteful number, since it uses less digits than its factorization.

121616681303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71413345.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 121616681303 in words is "one hundred twenty-one billion, six hundred sixteen million, six hundred eighty-one thousand, three hundred three".