21233312222 has 32 divisors (see below), whose sum is σ = 34144830720. Its totient is φ = 9867755520.

The previous prime is 21233312209. The next prime is 21233312263. The reversal of 21233312222 is 22221333212.

It is a congruent number.

It is an unprimeable number.

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, 1573022 + ... + 1586462.

It is an arithmetic number, because the mean of its divisors is an integer number (1067025960).

Almost surely, 2^21233312222 is an apocalyptic number.

21233312222 is a deficient number, since it is larger than the sum of its proper divisors (12911518498).

21233312222 is a wasteful number, since it uses less digits than its factorization.

21233312222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14036.

The product of its digits is 1728, while the sum is 23.

Adding to 21233312222 its reverse (22221333212), we get a palindrome (43454645434).

The spelling of 21233312222 in words is "twenty-one billion, two hundred thirty-three million, three hundred twelve thousand, two hundred twenty-two".