21244041222 has 8 divisors (see below), whose sum is σ = 42488082456. Its totient is φ = 7081347072.

The previous prime is 21244041209. The next prime is 21244041229. The reversal of 21244041222 is 22214044212.

It is a happy number.

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

21244041222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21244041192 and 21244041201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244041229) 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, 1770336763 + ... + 1770336774.

It is an arithmetic number, because the mean of its divisors is an integer number (5311010307).

Almost surely, 2^21244041222 is an apocalyptic number.

21244041222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21244041222 is a wasteful number, since it uses less digits than its factorization.

21244041222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540673542.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21244041222 its reverse (22214044212), we get a palindrome (43458085434).

The spelling of 21244041222 in words is "twenty-one billion, two hundred forty-four million, forty-one thousand, two hundred twenty-two".