63212189 has 2 divisors, whose sum is σ = 63212190. Its totient is φ = 63212188.

The previous prime is 63212179. The next prime is 63212203. The reversal of 63212189 is 98121236.

63212189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61889689 + 1322500 = 7867^2 + 1150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63212189 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63212129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31606094 + 31606095.

It is an arithmetic number, because the mean of its divisors is an integer number (31606095).

Almost surely, 2^63212189 is an apocalyptic number.

It is an amenable number.

63212189 is a deficient number, since it is larger than the sum of its proper divisors (1).

63212189 is an equidigital number, since it uses as much as digits as its factorization.

63212189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 63212189 is about 7950.6093477167. The cubic root of 63212189 is about 398.3519462056.

It can be divided in two parts, 632 and 12189, that added together give a palindrome (12821).

The spelling of 63212189 in words is "sixty-three million, two hundred twelve thousand, one hundred eighty-nine".