21442321322 has 8 divisors (see below), whose sum is σ = 32201820000. Its totient is φ = 10708381324.

The previous prime is 21442321319. The next prime is 21442321367. The reversal of 21442321322 is 22312324412.

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 = 21442321291 and 21442321300.

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, 6387572 + ... + 6390927.

It is an arithmetic number, because the mean of its divisors is an integer number (4025227500).

Almost surely, 2^21442321322 is an apocalyptic number.

21442321322 is a deficient number, since it is larger than the sum of its proper divisors (10759498678).

21442321322 is a wasteful number, since it uses less digits than its factorization.

21442321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12779340.

The product of its digits is 4608, while the sum is 26.

Adding to 21442321322 its reverse (22312324412), we get a palindrome (43754645734).

The spelling of 21442321322 in words is "twenty-one billion, four hundred forty-two million, three hundred twenty-one thousand, three hundred twenty-two".