212164633 has 2 divisors, whose sum is σ = 212164634. Its totient is φ = 212164632.

The previous prime is 212164577. The next prime is 212164643. The reversal of 212164633 is 336461212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200137609 + 12027024 = 14147^2 + 3468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212164633 is a prime.

It is not a weakly prime, because it can be changed into another prime (212164643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106082316 + 106082317.

It is an arithmetic number, because the mean of its divisors is an integer number (106082317).

Almost surely, 2^212164633 is an apocalyptic number.

It is an amenable number.

212164633 is a deficient number, since it is larger than the sum of its proper divisors (1).

212164633 is an equidigital number, since it uses as much as digits as its factorization.

212164633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

The square root of 212164633 is about 14565.8722018285. The cubic root of 212164633 is about 596.4275052791.

The spelling of 212164633 in words is "two hundred twelve million, one hundred sixty-four thousand, six hundred thirty-three".