212818069 has 8 divisors (see below), whose sum is σ = 231246080. Its totient is φ = 195112800.

The previous prime is 212818033. The next prime is 212818093. The reversal of 212818069 is 960818212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212818069 is a prime.

It is a super-2 number, since 2×212818069² = 90583060985777522, 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 (212818469) 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, 180072 + ... + 181249.

It is an arithmetic number, because the mean of its divisors is an integer number (28905760).

Almost surely, 2^212818069 is an apocalyptic number.

It is an amenable number.

212818069 is a deficient number, since it is larger than the sum of its proper divisors (18428011).

212818069 is a wasteful number, since it uses less digits than its factorization.

212818069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361371.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 212818069 is about 14588.2853344730. The cubic root of 212818069 is about 597.0391808760.

The spelling of 212818069 in words is "two hundred twelve million, eight hundred eighteen thousand, sixty-nine".