22323100221 has 12 divisors (see below), whose sum is σ = 33115950972. Its totient is φ = 14479848576.

The previous prime is 22323100199. The next prime is 22323100237. The reversal of 22323100221 is 12200132322.

22323100221 is a `hidden beast` number, since 22 + 323 + 100 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18148131225 + 4174968996 = 134715^2 + 64614^2 .

It is not a de Polignac number, because 22323100221 - 2¹¹ = 22323098173 is a prime.

It is a super-3 number, since 3×22323100221³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22323100194 and 22323100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22323100621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33517836 + ... + 33518501.

It is an arithmetic number, because the mean of its divisors is an integer number (2759662581).

Almost surely, 2^22323100221 is an apocalyptic number.

It is an amenable number.

22323100221 is a deficient number, since it is larger than the sum of its proper divisors (10792850751).

22323100221 is a wasteful number, since it uses less digits than its factorization.

22323100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67036380 (or 67036377 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22323100221 its reverse (12200132322), we get a palindrome (34523232543).

The spelling of 22323100221 in words is "twenty-two billion, three hundred twenty-three million, one hundred thousand, two hundred twenty-one".