221000201321 has 8 divisors (see below), whose sum is σ = 225736178304. Its totient is φ = 216265634640.

The previous prime is 221000201291. The next prime is 221000201351. The reversal of 221000201321 is 123102000122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221000201291) and next prime (221000201351).

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

It is a cyclic number.

It is not a de Polignac number, because 221000201321 - 2¹⁰ = 221000200297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221000201296 and 221000201305.

It is not an unprimeable number, because it can be changed into a prime (221000201351) 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, 32735 + ... + 665636.

It is an arithmetic number, because the mean of its divisors is an integer number (28217022288).

Almost surely, 2^221000201321 is an apocalyptic number.

It is an amenable number.

221000201321 is a deficient number, since it is larger than the sum of its proper divisors (4735976983).

221000201321 is an equidigital number, since it uses as much as digits as its factorization.

221000201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705151.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221000201321 its reverse (123102000122), we get a palindrome (344102201443).

The spelling of 221000201321 in words is "two hundred twenty-one billion, two hundred one thousand, three hundred twenty-one".