21223000233222 has 32 divisors (see below), whose sum is σ = 43050666912000. Its totient is φ = 6974207954208.

The previous prime is 21223000233199. The next prime is 21223000233229. The reversal of 21223000233222 is 22233200032212.

It is a junction number, because it is equal to n+sod(n) for n = 21223000233192 and 21223000233201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223000233229) 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, 81405208 + ... + 81665499.

It is an arithmetic number, because the mean of its divisors is an integer number (1345333341000).

Almost surely, 2^{21223000233222} is an apocalyptic number.

21223000233222 is an abundant number, since it is smaller than the sum of its proper divisors (21827666678778).

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

21223000233222 is a wasteful number, since it uses less digits than its factorization.

21223000233222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163071020.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21223000233222 its reverse (22233200032212), we get a palindrome (43456200265434).

The spelling of 21223000233222 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-three thousand, two hundred twenty-two".