97211129 has 2 divisors, whose sum is σ = 97211130. Its totient is φ = 97211128.

The previous prime is 97211113. The next prime is 97211131. The reversal of 97211129 is 92111279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69889600 + 27321529 = 8360^2 + 5227^2 .

It is a cyclic number.

It is not a de Polignac number, because 97211129 - 2⁴ = 97211113 is a prime.

It is a Sophie Germain prime.

Together with 97211131, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 97211095 and 97211104.

It is not a weakly prime, because it can be changed into another prime (97211189) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48605564 + 48605565.

It is an arithmetic number, because the mean of its divisors is an integer number (48605565).

Almost surely, 2^97211129 is an apocalyptic number.

It is an amenable number.

97211129 is a deficient number, since it is larger than the sum of its proper divisors (1).

97211129 is an equidigital number, since it uses as much as digits as its factorization.

97211129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 32.

The square root of 97211129 is about 9859.5704267478. The cubic root of 97211129 is about 459.8032066217.

The spelling of 97211129 in words is "ninety-seven million, two hundred eleven thousand, one hundred twenty-nine".