211111002000247 has 2 divisors, whose sum is σ = 211111002000248. Its totient is φ = 211111002000246.

The previous prime is 211111002000209. The next prime is 211111002000257. The reversal of 211111002000247 is 742000200111112.

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-211111002000247 is a prime.

It is a super-2 number, since 2×211111002000247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211111002000257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555501000123 + 105555501000124.

It is an arithmetic number, because the mean of its divisors is an integer number (105555501000124).

Almost surely, 2^{211111002000247} is an apocalyptic number.

211111002000247 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111002000247 is an equidigital number, since it uses as much as digits as its factorization.

211111002000247 is an evil number, because the sum of its binary digits is even.

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

Adding to 211111002000247 its reverse (742000200111112), we get a palindrome (953111202111359).

The spelling of 211111002000247 in words is "two hundred eleven trillion, one hundred eleven billion, two million, two hundred forty-seven", and thus it is an aban number.