21324323122 has 16 divisors (see below), whose sum is σ = 32791651200. Its totient is φ = 10394169760.

The previous prime is 21324323101. The next prime is 21324323129. The reversal of 21324323122 is 22132342312.

It is a super-2 number, since 2×21324323122² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21324323129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9579 + ... + 206737.

It is an arithmetic number, because the mean of its divisors is an integer number (2049478200).

Almost surely, 2^21324323122 is an apocalyptic number.

21324323122 is a deficient number, since it is larger than the sum of its proper divisors (11467328078).

21324323122 is a wasteful number, since it uses less digits than its factorization.

21324323122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198521.

The product of its digits is 3456, while the sum is 25.

Adding to 21324323122 its reverse (22132342312), we get a palindrome (43456665434).

The spelling of 21324323122 in words is "twenty-one billion, three hundred twenty-four million, three hundred twenty-three thousand, one hundred twenty-two".