221000200097 has 4 divisors (see below), whose sum is σ = 226973178516. Its totient is φ = 215027221680.

The previous prime is 221000200061. The next prime is 221000200111. The reversal of 221000200097 is 790002000122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185114202001 + 35885998096 = 430249^2 + 189436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221000200097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221000200007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2986489154 + ... + 2986489227.

It is an arithmetic number, because the mean of its divisors is an integer number (56743294629).

Almost surely, 2^221000200097 is an apocalyptic number.

It is an amenable number.

221000200097 is a deficient number, since it is larger than the sum of its proper divisors (5972978419).

221000200097 is an equidigital number, since it uses as much as digits as its factorization.

221000200097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972978418.

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 221000200097 in words is "two hundred twenty-one billion, two hundred thousand, ninety-seven".