211011220097 has 2 divisors, whose sum is σ = 211011220098. Its totient is φ = 211011220096.

The previous prime is 211011220051. The next prime is 211011220139. The reversal of 211011220097 is 790022110112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143793398401 + 67217821696 = 379201^2 + 259264^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011220097 - 2⁸ = 211011219841 is a prime.

It is not a weakly prime, because it can be changed into another prime (211011220027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505610048 + 105505610049.

It is an arithmetic number, because the mean of its divisors is an integer number (105505610049).

Almost surely, 2^211011220097 is an apocalyptic number.

It is an amenable number.

211011220097 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011220097 is an equidigital number, since it uses as much as digits as its factorization.

211011220097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 211011220097 in words is "two hundred eleven billion, eleven million, two hundred twenty thousand, ninety-seven".