221311312201 has 8 divisors (see below), whose sum is σ = 253215621440. Its totient is φ = 189479104848.

The previous prime is 221311312063. The next prime is 221311312223. The reversal of 221311312201 is 102213113122.

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 221311312201 - 2¹⁵ = 221311279433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221311312601) 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, 18018891 + ... + 18031168.

It is an arithmetic number, because the mean of its divisors is an integer number (31651952680).

Almost surely, 2^221311312201 is an apocalyptic number.

It is an amenable number.

221311312201 is a deficient number, since it is larger than the sum of its proper divisors (31904309239).

221311312201 is an equidigital number, since it uses as much as digits as its factorization.

221311312201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36050943.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221311312201 its reverse (102213113122), we get a palindrome (323524425323).

The spelling of 221311312201 in words is "two hundred twenty-one billion, three hundred eleven million, three hundred twelve thousand, two hundred one".