221223330001 has 4 divisors (see below), whose sum is σ = 221268180532. Its totient is φ = 221178479472.

The previous prime is 221223329963. The next prime is 221223330017. The reversal of 221223330001 is 100033322122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47814382225 + 173408947776 = 218665^2 + 416424^2 .

It is a cyclic number.

It is not a de Polignac number, because 221223330001 - 2²³ = 221214941393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221223330091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22417866 + ... + 22427731.

It is an arithmetic number, because the mean of its divisors is an integer number (55317045133).

Almost surely, 2^221223330001 is an apocalyptic number.

It is an amenable number.

221223330001 is a deficient number, since it is larger than the sum of its proper divisors (44850531).

221223330001 is an equidigital number, since it uses as much as digits as its factorization.

221223330001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44850530.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221223330001 its reverse (100033322122), we get a palindrome (321256652123).

The spelling of 221223330001 in words is "two hundred twenty-one billion, two hundred twenty-three million, three hundred thirty thousand, one".