21020332322 has 16 divisors (see below), whose sum is σ = 34607937312. Its totient is φ = 9496077120.

The previous prime is 21020332309. The next prime is 21020332331. The reversal of 21020332322 is 22323302012.

It is a junction number, because it is equal to n+sod(n) for n = 21020332294 and 21020332303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2927303 + ... + 2934474.

It is an arithmetic number, because the mean of its divisors is an integer number (2162996082).

Almost surely, 2^21020332322 is an apocalyptic number.

21020332322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21020332322 is a deficient number, since it is larger than the sum of its proper divisors (13587604990).

21020332322 is a wasteful number, since it uses less digits than its factorization.

21020332322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5861953.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21020332322 its reverse (22323302012), we get a palindrome (43343634334).

The spelling of 21020332322 in words is "twenty-one billion, twenty million, three hundred thirty-two thousand, three hundred twenty-two".