212664033 has 12 divisors (see below), whose sum is σ = 325251108. Its totient is φ = 133436160.

The previous prime is 212664031. The next prime is 212664043. The reversal of 212664033 is 330466212.

212664033 is a `hidden beast` number, since 2 + 12 + 6 + 640 + 3 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 165714129 + 46949904 = 12873^2 + 6852^2 .

It is not a de Polignac number, because 212664033 - 2¹ = 212664031 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212663988 and 212664006.

It is not an unprimeable number, because it can be changed into a prime (212664031) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 694828 + ... + 695133.

It is an arithmetic number, because the mean of its divisors is an integer number (27104259).

Almost surely, 2^212664033 is an apocalyptic number.

It is an amenable number.

212664033 is a deficient number, since it is larger than the sum of its proper divisors (112587075).

212664033 is a wasteful number, since it uses less digits than its factorization.

212664033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389984 (or 1389981 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 212664033 is about 14583.0049372549. The cubic root of 212664033 is about 596.8951020632.

The spelling of 212664033 in words is "two hundred twelve million, six hundred sixty-four thousand, thirty-three".