22233221320 has 16 divisors (see below), whose sum is σ = 50024748060. Its totient is φ = 8893288512.

The previous prime is 22233221293. The next prime is 22233221407. The reversal of 22233221320 is 2312233222.

It can be written as a sum of positive squares in 2 ways, for example, as 21095238564 + 1137982756 = 145242^2 + 33734^2 .

It is a super-2 number, since 2×22233221320² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22233221291 and 22233221300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277915227 + ... + 277915306.

Almost surely, 2^22233221320 is an apocalyptic number.

22233221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22233221320 is an abundant number, since it is smaller than the sum of its proper divisors (27791526740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22233221320 is a wasteful number, since it uses less digits than its factorization.

22233221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555830544 (or 555830540 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 22233221320 its reverse (2312233222), we get a palindrome (24545454542).

The spelling of 22233221320 in words is "twenty-two billion, two hundred thirty-three million, two hundred twenty-one thousand, three hundred twenty".