21230000203222 has 16 divisors (see below), whose sum is σ = 33804914906880. Its totient is φ = 9964905578368.

The previous prime is 21230000203213. The next prime is 21230000203259. The reversal of 21230000203222 is 22230200003212.

It is a super-2 number, since 2×21230000203222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21230000203222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802572598 + ... + 802599049.

It is an arithmetic number, because the mean of its divisors is an integer number (2112807181680).

Almost surely, 2^{21230000203222} is an apocalyptic number.

21230000203222 is a deficient number, since it is larger than the sum of its proper divisors (12574914703658).

21230000203222 is a wasteful number, since it uses less digits than its factorization.

21230000203222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605172055.

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

Adding to 21230000203222 its reverse (22230200003212), we get a palindrome (43460200206434).

The spelling of 21230000203222 in words is "twenty-one trillion, two hundred thirty billion, two hundred three thousand, two hundred twenty-two".