221100120097 has 2 divisors, whose sum is σ = 221100120098. Its totient is φ = 221100120096.

The previous prime is 221100120083. The next prime is 221100120149. The reversal of 221100120097 is 790021001122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177935486976 + 43164633121 = 421824^2 + 207761^2 .

It is a cyclic number.

It is not a de Polignac number, because 221100120097 - 2²³ = 221091731489 is a prime.

It is not a weakly prime, because it can be changed into another prime (221100120067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550060048 + 110550060049.

It is an arithmetic number, because the mean of its divisors is an integer number (110550060049).

Almost surely, 2^221100120097 is an apocalyptic number.

It is an amenable number.

221100120097 is a deficient number, since it is larger than the sum of its proper divisors (1).

221100120097 is an equidigital number, since it uses as much as digits as its factorization.

221100120097 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 25.

The spelling of 221100120097 in words is "two hundred twenty-one billion, one hundred million, one hundred twenty thousand, ninety-seven".