21404143322 has 8 divisors (see below), whose sum is σ = 32117148000. Its totient is φ = 10698427324.

The previous prime is 21404143309. The next prime is 21404143349. The reversal of 21404143322 is 22334140412.

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 = 21404143291 and 21404143300.

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, 1814822 + ... + 1826577.

It is an arithmetic number, because the mean of its divisors is an integer number (4014643500).

Almost surely, 2^21404143322 is an apocalyptic number.

21404143322 is a deficient number, since it is larger than the sum of its proper divisors (10713004678).

21404143322 is a wasteful number, since it uses less digits than its factorization.

21404143322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644340.

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

Adding to 21404143322 its reverse (22334140412), we get a palindrome (43738283734).

The spelling of 21404143322 in words is "twenty-one billion, four hundred four million, one hundred forty-three thousand, three hundred twenty-two".