21222132122 has 8 divisors (see below), whose sum is σ = 32510500416. Its totient is φ = 10385298652.

The previous prime is 21222132119. The next prime is 21222132149. The reversal of 21222132122 is 22123122212.

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 = 21222132094 and 21222132103.

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, 112883588 + ... + 112883775.

It is an arithmetic number, because the mean of its divisors is an integer number (4063812552).

Almost surely, 2^21222132122 is an apocalyptic number.

21222132122 is a deficient number, since it is larger than the sum of its proper divisors (11288368294).

21222132122 is a wasteful number, since it uses less digits than its factorization.

21222132122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225767412.

The product of its digits is 384, while the sum is 20.

Adding to 21222132122 its reverse (22123122212), we get a palindrome (43345254334).

The spelling of 21222132122 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred twenty-two".