21023321322 has 8 divisors (see below), whose sum is σ = 42046642656. Its totient is φ = 7007773772.

The previous prime is 21023321321. The next prime is 21023321401. The reversal of 21023321322 is 22312332012.

It is a happy number.

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

21023321322 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21023321321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751943438 + ... + 1751943449.

It is an arithmetic number, because the mean of its divisors is an integer number (5255830332).

Almost surely, 2^21023321322 is an apocalyptic number.

21023321322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21023321322 is a wasteful number, since it uses less digits than its factorization.

21023321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503886892.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21023321322 its reverse (22312332012), we get a palindrome (43335653334).

The spelling of 21023321322 in words is "twenty-one billion, twenty-three million, three hundred twenty-one thousand, three hundred twenty-two".