210201209947 has 2 divisors, whose sum is σ = 210201209948. Its totient is φ = 210201209946.

The previous prime is 210201209941. The next prime is 210201210013. The reversal of 210201209947 is 749902102012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210201209947 is a prime.

It is not a weakly prime, because it can be changed into another prime (210201209941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105100604973 + 105100604974.

It is an arithmetic number, because the mean of its divisors is an integer number (105100604974).

Almost surely, 2^210201209947 is an apocalyptic number.

210201209947 is a deficient number, since it is larger than the sum of its proper divisors (1).

210201209947 is an equidigital number, since it uses as much as digits as its factorization.

210201209947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 210201209947 in words is "two hundred ten billion, two hundred one million, two hundred nine thousand, nine hundred forty-seven".