21310222322 has 4 divisors (see below), whose sum is σ = 31965333486. Its totient is φ = 10655111160.

The previous prime is 21310222303. The next prime is 21310222333. The reversal of 21310222322 is 22322201312.

It is a happy number.

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., 13229830441 + 8080391881 = 115021^2 + 89891^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21310222294 and 21310222303.

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 as a sum of consecutive naturals, namely, 5327555579 + ... + 5327555582.

Almost surely, 2^21310222322 is an apocalyptic number.

21310222322 is a deficient number, since it is larger than the sum of its proper divisors (10655111164).

21310222322 is a wasteful number, since it uses less digits than its factorization.

21310222322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655111163.

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

Adding to 21310222322 its reverse (22322201312), we get a palindrome (43632423634).

The spelling of 21310222322 in words is "twenty-one billion, three hundred ten million, two hundred twenty-two thousand, three hundred twenty-two".