221310302201 has 8 divisors (see below), whose sum is σ = 227465742600. Its totient is φ = 215236391040.

The previous prime is 221310302177. The next prime is 221310302261. The reversal of 221310302201 is 102203013122.

It can be written as a sum of positive squares in 4 ways, for example, as 2178648976 + 219131653225 = 46676^2 + 468115^2 .

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-221310302201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221310302201.

It is not an unprimeable number, because it can be changed into a prime (221310302261) 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, 20376806 + ... + 20387663.

It is an arithmetic number, because the mean of its divisors is an integer number (28433217825).

Almost surely, 2^221310302201 is an apocalyptic number.

It is an amenable number.

221310302201 is a deficient number, since it is larger than the sum of its proper divisors (6155440399).

221310302201 is an equidigital number, since it uses as much as digits as its factorization.

221310302201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40764619.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221310302201 its reverse (102203013122), we get a palindrome (323513315323).

The spelling of 221310302201 in words is "two hundred twenty-one billion, three hundred ten million, three hundred two thousand, two hundred one".