21422223230 has 16 divisors (see below), whose sum is σ = 40236524064. Its totient is φ = 8196328800.

The previous prime is 21422223217. The next prime is 21422223247. The reversal of 21422223230 is 3232222412.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21422223196 and 21422223205.

It is a congruent number.

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, 46569821 + ... + 46570280.

It is an arithmetic number, because the mean of its divisors is an integer number (2514782754).

Almost surely, 2^21422223230 is an apocalyptic number.

21422223230 is a deficient number, since it is larger than the sum of its proper divisors (18814300834).

21422223230 is a wasteful number, since it uses less digits than its factorization.

21422223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93140131.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21422223230 its reverse (3232222412), we get a palindrome (24654445642).

The spelling of 21422223230 in words is "twenty-one billion, four hundred twenty-two million, two hundred twenty-three thousand, two hundred thirty".