210221100120222 has 24 divisors (see below), whose sum is σ = 475282487229264. Its totient is φ = 67027017429504.

The previous prime is 210221100120191. The next prime is 210221100120233. The reversal of 210221100120222 is 222021001122012.

It is a happy number.

210221100120222 is a `hidden beast` number, since 2 + 1 + 0 + 221 + 100 + 120 + 222 = 666.

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 = 210221100120195 and 210221100120204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253890217123 + ... + 253890217950.

It is an arithmetic number, because the mean of its divisors is an integer number (19803436967886).

Almost surely, 2^{210221100120222} is an apocalyptic number.

210221100120222 is an abundant number, since it is smaller than the sum of its proper divisors (265061387109042).

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

210221100120222 is a wasteful number, since it uses less digits than its factorization.

210221100120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507780435104 (or 507780435101 counting only the distinct ones).

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

Adding to 210221100120222 its reverse (222021001122012), we get a palindrome (432242101242234).

The spelling of 210221100120222 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred million, one hundred twenty thousand, two hundred twenty-two".