121572085 has 16 divisors (see below), whose sum is σ = 149097600. Its totient is φ = 95135040.

The previous prime is 121572079. The next prime is 121572097. The reversal of 121572085 is 580275121.

It is not a de Polignac number, because 121572085 - 2²¹ = 119474933 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 59694 + ... + 61696.

It is an arithmetic number, because the mean of its divisors is an integer number (9318600).

Almost surely, 2^121572085 is an apocalyptic number.

It is an amenable number.

121572085 is a deficient number, since it is larger than the sum of its proper divisors (27525515).

121572085 is a wasteful number, since it uses less digits than its factorization.

121572085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 121572085 is about 11025.9731996772. The cubic root of 121572085 is about 495.3870183505.

The spelling of 121572085 in words is "one hundred twenty-one million, five hundred seventy-two thousand, eighty-five".