210211200021222 has 96 divisors (see below), whose sum is σ = 509312165281920. Its totient is φ = 64763399119680.

The previous prime is 210211200021191. The next prime is 210211200021223. The reversal of 210211200021222 is 222120002112012.

It is a happy number.

210211200021222 is a `hidden beast` number, since 2 + 10 + 211 + 200 + 0 + 21 + 222 = 666.

It is a super-2 number, since 2×210211200021222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 210211200021195 and 210211200021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211200021223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277242288 + ... + 277999475.

It is an arithmetic number, because the mean of its divisors is an integer number (5305335055020).

Almost surely, 2^{210211200021222} is an apocalyptic number.

210211200021222 is an abundant number, since it is smaller than the sum of its proper divisors (299100965260698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210211200021222 is a wasteful number, since it uses less digits than its factorization.

210211200021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555241840 (or 555241828 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210211200021222 its reverse (222120002112012), we get a palindrome (432331202133234).

The spelling of 210211200021222 in words is "two hundred ten trillion, two hundred eleven billion, two hundred million, twenty-one thousand, two hundred twenty-two".