21210200212222 has 8 divisors (see below), whose sum is σ = 36360343220976. Its totient is φ = 9090085805232.

The previous prime is 21210200212211. The next prime is 21210200212237. The reversal of 21210200212222 is 22221200201212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21210200212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757507150423 + ... + 757507150450.

It is an arithmetic number, because the mean of its divisors is an integer number (4545042902622).

Almost surely, 2^{21210200212222} is an apocalyptic number.

21210200212222 is a deficient number, since it is larger than the sum of its proper divisors (15150143008754).

21210200212222 is a wasteful number, since it uses less digits than its factorization.

21210200212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515014300882.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21210200212222 its reverse (22221200201212), we get a palindrome (43431400413434).

The spelling of 21210200212222 in words is "twenty-one trillion, two hundred ten billion, two hundred million, two hundred twelve thousand, two hundred twenty-two".