21104440222 has 8 divisors (see below), whose sum is σ = 32748269400. Its totient is φ = 10188350424.

The previous prime is 21104440151. The next prime is 21104440229. The reversal of 21104440222 is 22204440112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21104440193 and 21104440202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104440229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181934772 + ... + 181934887.

It is an arithmetic number, because the mean of its divisors is an integer number (4093533675).

Almost surely, 2^21104440222 is an apocalyptic number.

21104440222 is a deficient number, since it is larger than the sum of its proper divisors (11643829178).

21104440222 is a wasteful number, since it uses less digits than its factorization.

21104440222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363869690.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21104440222 its reverse (22204440112), we get a palindrome (43308880334).

The spelling of 21104440222 in words is "twenty-one billion, one hundred four million, four hundred forty thousand, two hundred twenty-two".