22200223221 has 24 divisors (see below), whose sum is σ = 35927639904. Its totient is φ = 13091038560.

The previous prime is 22200223217. The next prime is 22200223327. The reversal of 22200223221 is 12232200222.

22200223221 is a `hidden beast` number, since 2 + 220 + 0 + 223 + 221 = 666.

It is not a de Polignac number, because 22200223221 - 2² = 22200223217 is a prime.

It is a super-2 number, since 2×22200223221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22200223194 and 22200223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3026671 + ... + 3033996.

It is an arithmetic number, because the mean of its divisors is an integer number (1496984996).

Almost surely, 2^22200223221 is an apocalyptic number.

It is an amenable number.

22200223221 is a deficient number, since it is larger than the sum of its proper divisors (13727416683).

22200223221 is a wasteful number, since it uses less digits than its factorization.

22200223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060721 (or 6060718 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22200223221 its reverse (12232200222), we get a palindrome (34432423443).

The spelling of 22200223221 in words is "twenty-two billion, two hundred million, two hundred twenty-three thousand, two hundred twenty-one".