210011211247 has 2 divisors, whose sum is σ = 210011211248. Its totient is φ = 210011211246.

The previous prime is 210011211191. The next prime is 210011211287. The reversal of 210011211247 is 742112110012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210011211247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210011211287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105005605623 + 105005605624.

It is an arithmetic number, because the mean of its divisors is an integer number (105005605624).

Almost surely, 2^210011211247 is an apocalyptic number.

210011211247 is a deficient number, since it is larger than the sum of its proper divisors (1).

210011211247 is an equidigital number, since it uses as much as digits as its factorization.

210011211247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 210011211247 its reverse (742112110012), we get a palindrome (952123321259).

The spelling of 210011211247 in words is "two hundred ten billion, eleven million, two hundred eleven thousand, two hundred forty-seven".