21230030222 has 4 divisors (see below), whose sum is σ = 31845045336. Its totient is φ = 10615015110.

The previous prime is 21230030221. The next prime is 21230030249. The reversal of 21230030222 is 22203003212.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21230030222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230030221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5307507554 + ... + 5307507557.

It is an arithmetic number, because the mean of its divisors is an integer number (7961261334).

Almost surely, 2^21230030222 is an apocalyptic number.

21230030222 is a deficient number, since it is larger than the sum of its proper divisors (10615015114).

21230030222 is a wasteful number, since it uses less digits than its factorization.

21230030222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10615015113.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21230030222 its reverse (22203003212), we get a palindrome (43433033434).

The spelling of 21230030222 in words is "twenty-one billion, two hundred thirty million, thirty thousand, two hundred twenty-two".