221300097 has 4 divisors (see below), whose sum is σ = 295066800. Its totient is φ = 147533396.

The previous prime is 221300063. The next prime is 221300137. The reversal of 221300097 is 790003122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221300097 - 2¹⁰ = 221299073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221301097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36883347 + ... + 36883352.

It is an arithmetic number, because the mean of its divisors is an integer number (73766700).

Almost surely, 2^221300097 is an apocalyptic number.

It is an amenable number.

221300097 is a deficient number, since it is larger than the sum of its proper divisors (73766703).

221300097 is an equidigital number, since it uses as much as digits as its factorization.

221300097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73766702.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 221300097 is about 14876.1586775619. The cubic root of 221300097 is about 604.8678963897.

The spelling of 221300097 in words is "two hundred twenty-one million, three hundred thousand, ninety-seven".