97218101 has 2 divisors, whose sum is σ = 97218102. Its totient is φ = 97218100.

The previous prime is 97218071. The next prime is 97218103. The reversal of 97218101 is 10181279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92659876 + 4558225 = 9626^2 + 2135^2 .

It is an emirp because it is prime and its reverse (10181279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97218101 - 2¹⁴ = 97201717 is a prime.

Together with 97218103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97218103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48609050 + 48609051.

It is an arithmetic number, because the mean of its divisors is an integer number (48609051).

Almost surely, 2^97218101 is an apocalyptic number.

It is an amenable number.

97218101 is a deficient number, since it is larger than the sum of its proper divisors (1).

97218101 is an equidigital number, since it uses as much as digits as its factorization.

97218101 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 square root of 97218101 is about 9859.9239855082. The cubic root of 97218101 is about 459.8141987491.

The spelling of 97218101 in words is "ninety-seven million, two hundred eighteen thousand, one hundred one".