21221112322 has 8 divisors (see below), whose sum is σ = 31834096272. Its totient is φ = 10609746900.

The previous prime is 21221112287. The next prime is 21221112361. The reversal of 21221112322 is 22321112212.

21221112322 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21221112322.

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, 371304 + ... + 424627.

It is an arithmetic number, because the mean of its divisors is an integer number (3979262034).

Almost surely, 2^21221112322 is an apocalyptic number.

21221112322 is a deficient number, since it is larger than the sum of its proper divisors (10612983950).

21221112322 is a wasteful number, since it uses less digits than its factorization.

21221112322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809264.

The product of its digits is 192, while the sum is 19.

Adding to 21221112322 its reverse (22321112212), we get a palindrome (43542224534).

The spelling of 21221112322 in words is "twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, three hundred twenty-two".