21210200222 has 8 divisors (see below), whose sum is σ = 32124187056. Its totient is φ = 10502137872.

The previous prime is 21210200201. The next prime is 21210200239. The reversal of 21210200222 is 22200201212.

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 = 21210200197 and 21210200206.

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, 51480863 + ... + 51481274.

It is an arithmetic number, because the mean of its divisors is an integer number (4015523382).

Almost surely, 2^21210200222 is an apocalyptic number.

21210200222 is a deficient number, since it is larger than the sum of its proper divisors (10913986834).

21210200222 is a wasteful number, since it uses less digits than its factorization.

21210200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102962242.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21210200222 its reverse (22200201212), we get a palindrome (43410401434).

The spelling of 21210200222 in words is "twenty-one billion, two hundred ten million, two hundred thousand, two hundred twenty-two".