97320752221 has 16 divisors (see below), whose sum is σ = 121456759680. Its totient is φ = 75758230080.

The previous prime is 97320752213. The next prime is 97320752281. The reversal of 97320752221 is 12225702379.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 97320752221 - 2³ = 97320752213 is a prime.

It is a super-2 number, since 2×97320752221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97320752281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557086 + ... + 710623.

It is an arithmetic number, because the mean of its divisors is an integer number (7591047480).

Almost surely, 2^97320752221 is an apocalyptic number.

It is an amenable number.

97320752221 is a deficient number, since it is larger than the sum of its proper divisors (24136007459).

97320752221 is a wasteful number, since it uses less digits than its factorization.

97320752221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268724.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 97320752221 in words is "ninety-seven billion, three hundred twenty million, seven hundred fifty-two thousand, two hundred twenty-one".