211111000097 has 2 divisors, whose sum is σ = 211111000098. Its totient is φ = 211111000096.

The previous prime is 211111000033. The next prime is 211111000117. The reversal of 211111000097 is 790000111112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137113943521 + 73997056576 = 370289^2 + 272024^2 .

It is a cyclic number.

It is not a de Polignac number, because 211111000097 - 2⁶ = 211111000033 is a prime.

It is not a weakly prime, because it can be changed into another prime (211111003097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555500048 + 105555500049.

It is an arithmetic number, because the mean of its divisors is an integer number (105555500049).

Almost surely, 2^211111000097 is an apocalyptic number.

It is an amenable number.

211111000097 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111000097 is an equidigital number, since it uses as much as digits as its factorization.

211111000097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 23.

The spelling of 211111000097 in words is "two hundred eleven billion, one hundred eleven million, ninety-seven", and thus it is an aban number.