21233322222 has 32 divisors (see below), whose sum is σ = 48550904064. Its totient is φ = 6064464000.

The previous prime is 21233322193. The next prime is 21233322223. The reversal of 21233322222 is 22222333212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21233322192 and 21233322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233322223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27397 + ... + 207887.

It is an arithmetic number, because the mean of its divisors is an integer number (1517215752).

Almost surely, 2^21233322222 is an apocalyptic number.

21233322222 is an abundant number, since it is smaller than the sum of its proper divisors (27317581842).

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

21233322222 is a wasteful number, since it uses less digits than its factorization.

21233322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183304.

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

Adding to 21233322222 its reverse (22222333212), we get a palindrome (43455655434).

The spelling of 21233322222 in words is "twenty-one billion, two hundred thirty-three million, three hundred twenty-two thousand, two hundred twenty-two".