21440302222 has 16 divisors (see below), whose sum is σ = 32480529120. Its totient is φ = 10613509632.

The previous prime is 21440302211. The next prime is 21440302223. The reversal of 21440302222 is 22220304412.

It is a junction number, because it is equal to n+sod(n) for n = 21440302193 and 21440302202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21440302223) 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 7 ways as a sum of consecutive naturals, for example, 1068054 + ... + 1087942.

It is an arithmetic number, because the mean of its divisors is an integer number (2030033070).

Almost surely, 2^21440302222 is an apocalyptic number.

21440302222 is a deficient number, since it is larger than the sum of its proper divisors (11040226898).

21440302222 is a wasteful number, since it uses less digits than its factorization.

21440302222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25227.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 21440302222 its reverse (22220304412), we get a palindrome (43660606634).

The spelling of 21440302222 in words is "twenty-one billion, four hundred forty million, three hundred two thousand, two hundred twenty-two".