210222112221 has 24 divisors (see below), whose sum is σ = 332993456640. Its totient is φ = 126740275200.

The previous prime is 210222112213. The next prime is 210222112223. The reversal of 210222112221 is 122211222012.

It is a happy number.

210222112221 is a `hidden beast` number, since 210 + 2 + 221 + 12 + 221 = 666.

It is not a de Polignac number, because 210222112221 - 2³ = 210222112213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210222112194 and 210222112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210222112223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5539876 + ... + 5577693.

It is an arithmetic number, because the mean of its divisors is an integer number (13874727360).

Almost surely, 2^210222112221 is an apocalyptic number.

It is an amenable number.

210222112221 is a deficient number, since it is larger than the sum of its proper divisors (122771344419).

210222112221 is a wasteful number, since it uses less digits than its factorization.

210222112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11117777 (or 11117774 counting only the distinct ones).

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

Adding to 210222112221 its reverse (122211222012), we get a palindrome (332433334233).

The spelling of 210222112221 in words is "two hundred ten billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twenty-one".