221200220220209 has 8 divisors (see below), whose sum is σ = 221238610097472. Its totient is φ = 221161832279280.

The previous prime is 221200220220157. The next prime is 221200220220269. The reversal of 221200220220209 is 902022022002122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221200220220209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221200220220269) 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, 238152587 + ... + 239079599.

It is an arithmetic number, because the mean of its divisors is an integer number (27654826262184).

Almost surely, 2^{221200220220209} is an apocalyptic number.

It is an amenable number.

221200220220209 is a deficient number, since it is larger than the sum of its proper divisors (38389877263).

221200220220209 is an equidigital number, since it uses as much as digits as its factorization.

221200220220209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968167.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 221200220220209 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twenty million, two hundred twenty thousand, two hundred nine".