21231013322 has 24 divisors (see below), whose sum is σ = 32256566496. Its totient is φ = 10480507008.

The previous prime is 21231013319. The next prime is 21231013333. The reversal of 21231013322 is 22331013212.

It is a junction number, because it is equal to n+sod(n) for n = 21231013294 and 21231013303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9464333 + ... + 9466575.

It is an arithmetic number, because the mean of its divisors is an integer number (1344023604).

Almost surely, 2^21231013322 is an apocalyptic number.

21231013322 is a deficient number, since it is larger than the sum of its proper divisors (11025553174).

21231013322 is an equidigital number, since it uses as much as digits as its factorization.

21231013322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21231013322 its reverse (22331013212), we get a palindrome (43562026534).

The spelling of 21231013322 in words is "twenty-one billion, two hundred thirty-one million, thirteen thousand, three hundred twenty-two".