22216655321 has 12 divisors (see below), whose sum is σ = 25946842320. Its totient is φ = 18966969000.

The previous prime is 22216655317. The next prime is 22216655341. The reversal of 22216655321 is 12355661222.

It is not a de Polignac number, because 22216655321 - 2² = 22216655317 is a prime.

It is a super-2 number, since 2×22216655321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22216655341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890891 + ... + 915488.

It is an arithmetic number, because the mean of its divisors is an integer number (2162236860).

Almost surely, 2^22216655321 is an apocalyptic number.

It is an amenable number.

22216655321 is a deficient number, since it is larger than the sum of its proper divisors (3730186999).

22216655321 is a wasteful number, since it uses less digits than its factorization.

22216655321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806644 (or 1806637 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The spelling of 22216655321 in words is "twenty-two billion, two hundred sixteen million, six hundred fifty-five thousand, three hundred twenty-one".