212812793 has 2 divisors, whose sum is σ = 212812794. Its totient is φ = 212812792.

The previous prime is 212812781. The next prime is 212812829. The reversal of 212812793 is 397218212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209757289 + 3055504 = 14483^2 + 1748^2 .

It is a cyclic number.

It is not a de Polignac number, because 212812793 - 2¹⁰ = 212811769 is a prime.

It is not a weakly prime, because it can be changed into another prime (212812723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106406396 + 106406397.

It is an arithmetic number, because the mean of its divisors is an integer number (106406397).

Almost surely, 2^212812793 is an apocalyptic number.

It is an amenable number.

212812793 is a deficient number, since it is larger than the sum of its proper divisors (1).

212812793 is an equidigital number, since it uses as much as digits as its factorization.

212812793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 212812793 is about 14588.1045033274. The cubic root of 212812793 is about 597.0342470770.

The spelling of 212812793 in words is "two hundred twelve million, eight hundred twelve thousand, seven hundred ninety-three".