97194921121 has 9 divisors (see below), whose sum is σ = 98605600849. Its totient is φ = 95804155300.

The previous prime is 97194921113. The next prime is 97194921127. The reversal of 97194921121 is 12112949179.

It is a happy number.

The square root of 97194921121 is 311761.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 97194921121 - 2³ = 97194921113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97194921127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22132836 + ... + 22137226.

Almost surely, 2^97194921121 is an apocalyptic number.

97194921121 is the 311761-st square number.

97194921121 is the 155881-st centered octagonal number.

It is an amenable number.

97194921121 is a deficient number, since it is larger than the sum of its proper divisors (1410679728).

97194921121 is an frugal number, since it uses more digits than its factorization.

97194921121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924 (or 4462 counting only the distinct ones).

The product of its digits is 81648, while the sum is 46.

The spelling of 97194921121 in words is "ninety-seven billion, one hundred ninety-four million, nine hundred twenty-one thousand, one hundred twenty-one".