21323142222 has 16 divisors (see below), whose sum is σ = 43037536080. Its totient is φ = 7042505472.

The previous prime is 21323142193. The next prime is 21323142227. The reversal of 21323142222 is 22224132312.

It is a junction number, because it is equal to n+sod(n) for n = 21323142192 and 21323142201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323142227) 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, 16301443 + ... + 16302750.

It is an arithmetic number, because the mean of its divisors is an integer number (2689846005).

Almost surely, 2^21323142222 is an apocalyptic number.

21323142222 is an abundant number, since it is smaller than the sum of its proper divisors (21714393858).

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

21323142222 is a wasteful number, since it uses less digits than its factorization.

21323142222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32604307.

The product of its digits is 2304, while the sum is 24.

Adding to 21323142222 its reverse (22224132312), we get a palindrome (43547274534).

The spelling of 21323142222 in words is "twenty-one billion, three hundred twenty-three million, one hundred forty-two thousand, two hundred twenty-two".