21344243222 has 8 divisors (see below), whose sum is σ = 32017077696. Its totient is φ = 10671883992.

The previous prime is 21344243213. The next prime is 21344243227. The reversal of 21344243222 is 22234244312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344243227) 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, 31508 + ... + 209000.

It is an arithmetic number, because the mean of its divisors is an integer number (4002134712).

Almost surely, 2^21344243222 is an apocalyptic number.

21344243222 is a deficient number, since it is larger than the sum of its proper divisors (10672834474).

21344243222 is a wasteful number, since it uses less digits than its factorization.

21344243222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237622.

The product of its digits is 18432, while the sum is 29.

Adding to 21344243222 its reverse (22234244312), we get a palindrome (43578487534).

The spelling of 21344243222 in words is "twenty-one billion, three hundred forty-four million, two hundred forty-three thousand, two hundred twenty-two".