21222223355233 has 16 divisors (see below), whose sum is σ = 22348726646400. Its totient is φ = 20112713786880.

The previous prime is 21222223355129. The next prime is 21222223355243. The reversal of 21222223355233 is 33255332222212.

It is a cyclic number.

It is not a de Polignac number, because 21222223355233 - 2²¹ = 21222221258081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21222223355192 and 21222223355201.

It is not an unprimeable number, because it can be changed into a prime (21222223355243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107649873 + ... + 107846833.

It is an arithmetic number, because the mean of its divisors is an integer number (1396795415400).

Almost surely, 2^{21222223355233} is an apocalyptic number.

21222223355233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21222223355233 is a deficient number, since it is larger than the sum of its proper divisors (1126503291167).

21222223355233 is a wasteful number, since it uses less digits than its factorization.

21222223355233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240072.

The product of its digits is 259200, while the sum is 37.

Adding to 21222223355233 its reverse (33255332222212), we get a palindrome (54477555577445).

The spelling of 21222223355233 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-three million, three hundred fifty-five thousand, two hundred thirty-three".