221001211120097 has 2 divisors, whose sum is σ = 221001211120098. Its totient is φ = 221001211120096.

The previous prime is 221001211120049. The next prime is 221001211120159. The reversal of 221001211120097 is 790021112100122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127589585349136 + 93411625770961 = 11295556^2 + 9664969^2 .

It is a cyclic number.

It is not a de Polignac number, because 221001211120097 - 2¹⁴ = 221001211103713 is a prime.

It is not a weakly prime, because it can be changed into another prime (221001211120037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500605560048 + 110500605560049.

It is an arithmetic number, because the mean of its divisors is an integer number (110500605560049).

Almost surely, 2^{221001211120097} is an apocalyptic number.

It is an amenable number.

221001211120097 is a deficient number, since it is larger than the sum of its proper divisors (1).

221001211120097 is an equidigital number, since it uses as much as digits as its factorization.

221001211120097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 221001211120097 in words is "two hundred twenty-one trillion, one billion, two hundred eleven million, one hundred twenty thousand, ninety-seven".