97129221188 has 6 divisors (see below), whose sum is σ = 169976137086. Its totient is φ = 48564610592.

The previous prime is 97129221151. The next prime is 97129221197. The reversal of 97129221188 is 88112292179.

It can be written as a sum of positive squares in only one way, i.e., 67308075844 + 29821145344 = 259438^2 + 172688^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12141152645 + ... + 12141152652.

It is an arithmetic number, because the mean of its divisors is an integer number (28329356181).

Almost surely, 2^97129221188 is an apocalyptic number.

It is an amenable number.

97129221188 is a deficient number, since it is larger than the sum of its proper divisors (72846915898).

97129221188 is a wasteful number, since it uses less digits than its factorization.

97129221188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24282305301 (or 24282305299 counting only the distinct ones).

The product of its digits is 290304, while the sum is 50.

The spelling of 97129221188 in words is "ninety-seven billion, one hundred twenty-nine million, two hundred twenty-one thousand, one hundred eighty-eight".