121985125273 has 8 divisors (see below), whose sum is σ = 133082659296. Its totient is φ = 110888920800.

The previous prime is 121985125253. The next prime is 121985125343. The reversal of 121985125273 is 372521589121.

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

It is a cyclic number.

It is not a de Polignac number, because 121985125273 - 2⁹ = 121985124761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121985125253) 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, 135468 + ... + 512173.

It is an arithmetic number, because the mean of its divisors is an integer number (16635332412).

Almost surely, 2^121985125273 is an apocalyptic number.

It is an amenable number.

121985125273 is a deficient number, since it is larger than the sum of its proper divisors (11097534023).

121985125273 is a wasteful number, since it uses less digits than its factorization.

121985125273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664775.

The product of its digits is 302400, while the sum is 46.

The spelling of 121985125273 in words is "one hundred twenty-one billion, nine hundred eighty-five million, one hundred twenty-five thousand, two hundred seventy-three".