21444213022 has 8 divisors (see below), whose sum is σ = 32201631072. Its totient is φ = 10710336000.

The previous prime is 21444213019. The next prime is 21444213071. The reversal of 21444213022 is 22031244412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5882979 + ... + 5886622.

It is an arithmetic number, because the mean of its divisors is an integer number (4025203884).

Almost surely, 2^21444213022 is an apocalyptic number.

21444213022 is a deficient number, since it is larger than the sum of its proper divisors (10757418050).

21444213022 is a wasteful number, since it uses less digits than its factorization.

21444213022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11770514.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21444213022 its reverse (22031244412), we get a palindrome (43475457434).

The spelling of 21444213022 in words is "twenty-one billion, four hundred forty-four million, two hundred thirteen thousand, twenty-two".