21320030222 has 16 divisors (see below), whose sum is σ = 32699035152. Its totient is φ = 10423000320.

The previous prime is 21320030201. The next prime is 21320030231. The reversal of 21320030222 is 22203002312.

It is a self number, because there is not a number n which added to its sum of digits gives 21320030222.

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, 645929 + ... + 678132.

It is an arithmetic number, because the mean of its divisors is an integer number (2043689697).

Almost surely, 2^21320030222 is an apocalyptic number.

21320030222 is a deficient number, since it is larger than the sum of its proper divisors (11379004930).

21320030222 is a wasteful number, since it uses less digits than its factorization.

21320030222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324243.

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

Adding to 21320030222 its reverse (22203002312), we get a palindrome (43523032534).

The spelling of 21320030222 in words is "twenty-one billion, three hundred twenty million, thirty thousand, two hundred twenty-two".