221010110211097 has 2 divisors, whose sum is σ = 221010110211098. Its totient is φ = 221010110211096.

The previous prime is 221010110211091. The next prime is 221010110211119. The reversal of 221010110211097 is 790112011010122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211433090666121 + 9577019544976 = 14540739^2 + 3094676^2 .

It is a cyclic number.

It is not a de Polignac number, because 221010110211097 - 2⁷ = 221010110210969 is a prime.

It is not a weakly prime, because it can be changed into another prime (221010110211091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505055105548 + 110505055105549.

It is an arithmetic number, because the mean of its divisors is an integer number (110505055105549).

Almost surely, 2^{221010110211097} is an apocalyptic number.

It is an amenable number.

221010110211097 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010110211097 is an equidigital number, since it uses as much as digits as its factorization.

221010110211097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 221010110211097 in words is "two hundred twenty-one trillion, ten billion, one hundred ten million, two hundred eleven thousand, ninety-seven".