212660353 has 2 divisors, whose sum is σ = 212660354. Its totient is φ = 212660352.

The previous prime is 212660351. The next prime is 212660363. The reversal of 212660353 is 353066212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199176769 + 13483584 = 14113^2 + 3672^2 .

It is a cyclic number.

It is not a de Polignac number, because 212660353 - 2¹ = 212660351 is a prime.

Together with 212660351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212660351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106330176 + 106330177.

It is an arithmetic number, because the mean of its divisors is an integer number (106330177).

Almost surely, 2^212660353 is an apocalyptic number.

It is an amenable number.

212660353 is a deficient number, since it is larger than the sum of its proper divisors (1).

212660353 is an equidigital number, since it uses as much as digits as its factorization.

212660353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 212660353 is about 14582.8787624392. The cubic root of 212660353 is about 596.8916590948.

The spelling of 212660353 in words is "two hundred twelve million, six hundred sixty thousand, three hundred fifty-three".