97220321 has 8 divisors (see below), whose sum is σ = 111640800. Its totient is φ = 83730240.

The previous prime is 97220311. The next prime is 97220339. The reversal of 97220321 is 12302279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97220321 - 2⁶ = 97220257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97220311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232376 + ... + 232793.

It is an arithmetic number, because the mean of its divisors is an integer number (13955100).

Almost surely, 2^97220321 is an apocalyptic number.

It is an amenable number.

97220321 is a deficient number, since it is larger than the sum of its proper divisors (14420479).

97220321 is a wasteful number, since it uses less digits than its factorization.

97220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465199.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 97220321 is about 9860.0365617983. The cubic root of 97220321 is about 459.8176987137.

The spelling of 97220321 in words is "ninety-seven million, two hundred twenty thousand, three hundred twenty-one".