212284013 has 2 divisors, whose sum is σ = 212284014. Its totient is φ = 212284012.

The previous prime is 212283983. The next prime is 212284021. The reversal of 212284013 is 310482212.

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., 162129289 + 50154724 = 12733^2 + 7082^2 .

It is a cyclic number.

It is not a de Polignac number, because 212284013 - 2¹² = 212279917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212284013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212284913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106142006 + 106142007.

It is an arithmetic number, because the mean of its divisors is an integer number (106142007).

Almost surely, 2^212284013 is an apocalyptic number.

It is an amenable number.

212284013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212284013 is an equidigital number, since it uses as much as digits as its factorization.

212284013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 212284013 is about 14569.9695607095. The cubic root of 212284013 is about 596.5393495016.

The spelling of 212284013 in words is "two hundred twelve million, two hundred eighty-four thousand, thirteen".