21022223230 has 8 divisors (see below), whose sum is σ = 37840001832. Its totient is φ = 8408889288.

The previous prime is 21022223111. The next prime is 21022223249. The reversal of 21022223230 is 3232222012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21022223198 and 21022223207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051111152 + ... + 1051111171.

It is an arithmetic number, because the mean of its divisors is an integer number (4730000229).

Almost surely, 2^21022223230 is an apocalyptic number.

21022223230 is a deficient number, since it is larger than the sum of its proper divisors (16817778602).

21022223230 is a wasteful number, since it uses less digits than its factorization.

21022223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102222330.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21022223230 its reverse (3232222012), we get a palindrome (24254445242).

The spelling of 21022223230 in words is "twenty-one billion, twenty-two million, two hundred twenty-three thousand, two hundred thirty".