21004321322 has 8 divisors (see below), whose sum is σ = 31510692576. Its totient is φ = 10500757132.

The previous prime is 21004321313. The next prime is 21004321333. The reversal of 21004321322 is 22312340012.

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 = 21004321294 and 21004321303.

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, 682958 + ... + 713049.

It is an arithmetic number, because the mean of its divisors is an integer number (3938836572).

Almost surely, 2^21004321322 is an apocalyptic number.

21004321322 is a deficient number, since it is larger than the sum of its proper divisors (10506371254).

21004321322 is a wasteful number, since it uses less digits than its factorization.

21004321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403532.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21004321322 its reverse (22312340012), we get a palindrome (43316661334).

The spelling of 21004321322 in words is "twenty-one billion, four million, three hundred twenty-one thousand, three hundred twenty-two".