212864033 has 4 divisors (see below), whose sum is σ = 213395268. Its totient is φ = 212332800.

The previous prime is 212864017. The next prime is 212864051. The reversal of 212864033 is 330468212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 210018064 + 2845969 = 14492^2 + 1687^2 .

It is a cyclic number.

It is not a de Polignac number, because 212864033 - 2⁴ = 212864017 is a prime.

It is a super-2 number, since 2×212864033² = 90622193090050178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212863987 and 212864005.

It is not an unprimeable number, because it can be changed into a prime (212864053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265016 + ... + 265817.

It is an arithmetic number, because the mean of its divisors is an integer number (53348817).

Almost surely, 2^212864033 is an apocalyptic number.

It is an amenable number.

212864033 is a deficient number, since it is larger than the sum of its proper divisors (531235).

212864033 is an equidigital number, since it uses as much as digits as its factorization.

212864033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531234.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 212864033 is about 14589.8606230491. The cubic root of 212864033 is about 597.0821602051.

The spelling of 212864033 in words is "two hundred twelve million, eight hundred sixty-four thousand, thirty-three".