212134285 has 8 divisors (see below), whose sum is σ = 277703136. Its totient is φ = 154279440.

The previous prime is 212134243. The next prime is 212134289. The reversal of 212134285 is 582431212.

212134285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212134285 - 2⁹ = 212133773 is a prime.

It is a super-2 number, since 2×212134285² = 90001909744922450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212134289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928439 + ... + 1928548.

It is an arithmetic number, because the mean of its divisors is an integer number (34712892).

Almost surely, 2^212134285 is an apocalyptic number.

It is an amenable number.

212134285 is a deficient number, since it is larger than the sum of its proper divisors (65568851).

212134285 is a wasteful number, since it uses less digits than its factorization.

212134285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857003.

The product of its digits is 3840, while the sum is 28.

The square root of 212134285 is about 14564.8304143921. The cubic root of 212134285 is about 596.3990662869.

Adding to 212134285 its reverse (582431212), we get a palindrome (794565497).

The spelling of 212134285 in words is "two hundred twelve million, one hundred thirty-four thousand, two hundred eighty-five".