21220010212222 has 8 divisors (see below), whose sum is σ = 32430581645256. Its totient is φ = 10409816330472.

The previous prime is 21220010212211. The next prime is 21220010212223. The reversal of 21220010212222 is 22221201002212.

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 21220010212222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220010212223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100094387688 + ... + 100094387899.

It is an arithmetic number, because the mean of its divisors is an integer number (4053822705657).

Almost surely, 2^{21220010212222} is an apocalyptic number.

21220010212222 is a deficient number, since it is larger than the sum of its proper divisors (11210571433034).

21220010212222 is a wasteful number, since it uses less digits than its factorization.

21220010212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200188775642.

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

Adding to 21220010212222 its reverse (22221201002212), we get a palindrome (43441211214434).

The spelling of 21220010212222 in words is "twenty-one trillion, two hundred twenty billion, ten million, two hundred twelve thousand, two hundred twenty-two".