121347985 has 8 divisors (see below), whose sum is σ = 158855616. Its totient is φ = 88253040.

The previous prime is 121347959. The next prime is 121347991. The reversal of 121347985 is 589743121.

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

It is not a de Polignac number, because 121347985 - 2¹⁹ = 120823697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1103109 + ... + 1103218.

It is an arithmetic number, because the mean of its divisors is an integer number (19856952).

Almost surely, 2^121347985 is an apocalyptic number.

It is an amenable number.

121347985 is a deficient number, since it is larger than the sum of its proper divisors (37507631).

121347985 is a wasteful number, since it uses less digits than its factorization.

121347985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206343.

The product of its digits is 60480, while the sum is 40.

The square root of 121347985 is about 11015.8061439007. The cubic root of 121347985 is about 495.0824404404.

The spelling of 121347985 in words is "one hundred twenty-one million, three hundred forty-seven thousand, nine hundred eighty-five".