21323212322 has 8 divisors (see below), whose sum is σ = 32267870316. Its totient is φ = 10567255552.

The previous prime is 21323212291. The next prime is 21323212363. The reversal of 21323212322 is 22321232312.

It can be written as a sum of positive squares in 2 ways, for example, as 17742506401 + 3580705921 = 133201^2 + 59839^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47175023 + ... + 47175474.

Almost surely, 2^21323212322 is an apocalyptic number.

21323212322 is a deficient number, since it is larger than the sum of its proper divisors (10944657994).

21323212322 is a wasteful number, since it uses less digits than its factorization.

21323212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94350612.

The product of its digits is 1728, while the sum is 23.

Adding to 21323212322 its reverse (22321232312), we get a palindrome (43644444634).

The spelling of 21323212322 in words is "twenty-one billion, three hundred twenty-three million, two hundred twelve thousand, three hundred twenty-two".