97129221229 has 2 divisors, whose sum is σ = 97129221230. Its totient is φ = 97129221228.

The previous prime is 97129221209. The next prime is 97129221289. The reversal of 97129221229 is 92212292179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83468988100 + 13660233129 = 288910^2 + 116877^2 .

It is a cyclic number.

It is not a de Polignac number, because 97129221229 - 2⁵ = 97129221197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97129221209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48564610614 + 48564610615.

It is an arithmetic number, because the mean of its divisors is an integer number (48564610615).

Almost surely, 2^97129221229 is an apocalyptic number.

It is an amenable number.

97129221229 is a deficient number, since it is larger than the sum of its proper divisors (1).

97129221229 is an equidigital number, since it uses as much as digits as its factorization.

97129221229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The spelling of 97129221229 in words is "ninety-seven billion, one hundred twenty-nine million, two hundred twenty-one thousand, two hundred twenty-nine".