21223122321330 has 48 divisors (see below), whose sum is σ = 55234590255000. Its totient is φ = 5653912391424.

The previous prime is 21223122321293. The next prime is 21223122321353. The reversal of 21223122321330 is 3312322132212.

21223122321330 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 1 + 2 + 2 + 321 + 330 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9084455205849 + 12138667115481 = 3014043^2 + 3484059^2 .

It is a super-2 number, since 2×21223122321330² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21223122321294 and 21223122321303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116301955 + ... + 116484294.

Almost surely, 2^{21223122321330} is an apocalyptic number.

21223122321330 is an abundant number, since it is smaller than the sum of its proper divisors (34011467933670).

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

21223122321330 is a wasteful number, since it uses less digits than its factorization.

21223122321330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232787275 (or 232787272 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21223122321330 its reverse (3312322132212), we get a palindrome (24535444453542).

The spelling of 21223122321330 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred twenty-two million, three hundred twenty-one thousand, three hundred thirty".