21200210221222 has 8 divisors (see below), whose sum is σ = 31995409291416. Its totient is φ = 10535073790752.

The previous prime is 21200210221217. The next prime is 21200210221249. The reversal of 21200210221222 is 22212201200212.

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 21200210221222.

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, 32515659523 + ... + 32515660174.

It is an arithmetic number, because the mean of its divisors is an integer number (3999426161427).

Almost surely, 2^{21200210221222} is an apocalyptic number.

21200210221222 is a deficient number, since it is larger than the sum of its proper divisors (10795199070194).

21200210221222 is a wasteful number, since it uses less digits than its factorization.

21200210221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65031319862.

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

Adding to 21200210221222 its reverse (22212201200212), we get a palindrome (43412411421434).

The spelling of 21200210221222 in words is "twenty-one trillion, two hundred billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty-two".