212224087 has 2 divisors, whose sum is σ = 212224088. Its totient is φ = 212224086.

The previous prime is 212224081. The next prime is 212224123. The reversal of 212224087 is 780422212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212224087 - 2⁷ = 212223959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212224081) 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, 106112043 + 106112044.

It is an arithmetic number, because the mean of its divisors is an integer number (106112044).

Almost surely, 2^212224087 is an apocalyptic number.

212224087 is a deficient number, since it is larger than the sum of its proper divisors (1).

212224087 is an equidigital number, since it uses as much as digits as its factorization.

212224087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 212224087 is about 14567.9129253301. The cubic root of 212224087 is about 596.4832115305.

Adding to 212224087 its reverse (780422212), we get a palindrome (992646299).

The spelling of 212224087 in words is "two hundred twelve million, two hundred twenty-four thousand, eighty-seven".