212412073 has 2 divisors, whose sum is σ = 212412074. Its totient is φ = 212412072.

The previous prime is 212412019. The next prime is 212412091. The reversal of 212412073 is 370214212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165585424 + 46826649 = 12868^2 + 6843^2 .

It is a cyclic number.

It is not a de Polignac number, because 212412073 - 2¹⁷ = 212281001 is a prime.

It is not a weakly prime, because it can be changed into another prime (212412173) 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, 106206036 + 106206037.

It is an arithmetic number, because the mean of its divisors is an integer number (106206037).

Almost surely, 2^212412073 is an apocalyptic number.

It is an amenable number.

212412073 is a deficient number, since it is larger than the sum of its proper divisors (1).

212412073 is an equidigital number, since it uses as much as digits as its factorization.

212412073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 212412073 is about 14574.3635538572. The cubic root of 212412073 is about 596.6592792000.

Adding to 212412073 its reverse (370214212), we get a palindrome (582626285).

The spelling of 212412073 in words is "two hundred twelve million, four hundred twelve thousand, seventy-three".