212881285 has 8 divisors (see below), whose sum is σ = 255611520. Its totient is φ = 170202384.

The previous prime is 212881271. The next prime is 212881289. The reversal of 212881285 is 582188212.

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 212881285 - 2²⁵ = 179326853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212881289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3025 + ... + 20854.

It is an arithmetic number, because the mean of its divisors is an integer number (31951440).

Almost surely, 2^212881285 is an apocalyptic number.

It is an amenable number.

212881285 is a deficient number, since it is larger than the sum of its proper divisors (42730235).

212881285 is a wasteful number, since it uses less digits than its factorization.

212881285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25667.

The product of its digits is 20480, while the sum is 37.

The square root of 212881285 is about 14590.4518435859. The cubic root of 212881285 is about 597.0982903501.

The spelling of 212881285 in words is "two hundred twelve million, eight hundred eighty-one thousand, two hundred eighty-five".