21342102322 has 4 divisors (see below), whose sum is σ = 32013153486. Its totient is φ = 10671051160.

The previous prime is 21342102259. The next prime is 21342102337. The reversal of 21342102322 is 22320124312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14144107041 + 7197995281 = 118929^2 + 84841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21342102293 and 21342102302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5335525579 + ... + 5335525582.

Almost surely, 2^21342102322 is an apocalyptic number.

21342102322 is a deficient number, since it is larger than the sum of its proper divisors (10671051164).

21342102322 is a wasteful number, since it uses less digits than its factorization.

21342102322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671051163.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21342102322 its reverse (22320124312), we get a palindrome (43662226634).

The spelling of 21342102322 in words is "twenty-one billion, three hundred forty-two million, one hundred two thousand, three hundred twenty-two".