121916911370 has 8 divisors (see below), whose sum is σ = 219450440484. Its totient is φ = 48766764544.

The previous prime is 121916911349. The next prime is 121916911379. The reversal of 121916911370 is 73119619121.

It can be written as a sum of positive squares in 2 ways, for example, as 116423581681 + 5493329689 = 341209^2 + 74117^2 .

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 (121916911379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6095845559 + ... + 6095845578.

Almost surely, 2^121916911370 is an apocalyptic number.

121916911370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121916911370 is a deficient number, since it is larger than the sum of its proper divisors (97533529114).

121916911370 is a wasteful number, since it uses less digits than its factorization.

121916911370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191691144.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 121916911370 in words is "one hundred twenty-one billion, nine hundred sixteen million, nine hundred eleven thousand, three hundred seventy".