121685941366 has 8 divisors (see below), whose sum is σ = 199122449544. Its totient is φ = 55311791520.

The previous prime is 121685941361. The next prime is 121685941373. The reversal of 121685941366 is 663149586121.

It is a happy number.

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

It is a super-2 number, since 2×121685941366² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121685941361) 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, 2765589555 + ... + 2765589598.

It is an arithmetic number, because the mean of its divisors is an integer number (24890306193).

Almost surely, 2^121685941366 is an apocalyptic number.

121685941366 is a deficient number, since it is larger than the sum of its proper divisors (77436508178).

121685941366 is a wasteful number, since it uses less digits than its factorization.

121685941366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5531179166.

The product of its digits is 1866240, while the sum is 52.

The spelling of 121685941366 in words is "one hundred twenty-one billion, six hundred eighty-five million, nine hundred forty-one thousand, three hundred sixty-six".