212012573 has 2 divisors, whose sum is σ = 212012574. Its totient is φ = 212012572.

The previous prime is 212012539. The next prime is 212012579. The reversal of 212012573 is 375210212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165199609 + 46812964 = 12853^2 + 6842^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012573 - 2²⁴ = 195235357 is a prime.

It is a super-2 number, since 2×212012573² = 89898662220160658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012579) 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, 106006286 + 106006287.

It is an arithmetic number, because the mean of its divisors is an integer number (106006287).

Almost surely, 2^212012573 is an apocalyptic number.

It is an amenable number.

212012573 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012573 is an equidigital number, since it uses as much as digits as its factorization.

212012573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 212012573 is about 14560.6515307523. The cubic root of 212012573 is about 596.2849831874.

Adding to 212012573 its reverse (375210212), we get a palindrome (587222785).

The spelling of 212012573 in words is "two hundred twelve million, twelve thousand, five hundred seventy-three".