212208793 has 2 divisors, whose sum is σ = 212208794. Its totient is φ = 212208792.

The previous prime is 212208791. The next prime is 212208803. The reversal of 212208793 is 397802212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180714249 + 31494544 = 13443^2 + 5612^2 .

It is a cyclic number.

It is not a de Polignac number, because 212208793 - 2¹ = 212208791 is a prime.

Together with 212208791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212208791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106104396 + 106104397.

It is an arithmetic number, because the mean of its divisors is an integer number (106104397).

Almost surely, 2^212208793 is an apocalyptic number.

It is an amenable number.

212208793 is a deficient number, since it is larger than the sum of its proper divisors (1).

212208793 is an equidigital number, since it uses as much as digits as its factorization.

212208793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 212208793 is about 14567.3879951074. The cubic root of 212208793 is about 596.4688825987.

The spelling of 212208793 in words is "two hundred twelve million, two hundred eight thousand, seven hundred ninety-three".