221310201 has 8 divisors (see below), whose sum is σ = 337234624. Its totient is φ = 126462960.

The previous prime is 221310151. The next prime is 221310203. The reversal of 221310201 is 102013122.

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

It is not a de Polignac number, because 221310201 - 2⁶ = 221310137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221310203) 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, 5269270 + ... + 5269311.

It is an arithmetic number, because the mean of its divisors is an integer number (42154328).

Almost surely, 2^221310201 is an apocalyptic number.

221310201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221310201 is a deficient number, since it is larger than the sum of its proper divisors (115924423).

221310201 is a wasteful number, since it uses less digits than its factorization.

221310201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538591.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 221310201 is about 14876.4982774845. The cubic root of 221310201 is about 604.8771018265.

Adding to 221310201 its reverse (102013122), we get a palindrome (323323323).

The spelling of 221310201 in words is "two hundred twenty-one million, three hundred ten thousand, two hundred one".