211222101010221 has 48 divisors (see below), whose sum is σ = 349882960976640. Its totient is φ = 120283374988800.

The previous prime is 211222101010199. The next prime is 211222101010273. The reversal of 211222101010221 is 122010101222112.

211222101010221 is a `hidden beast` number, since 211 + 2 + 2 + 210 + 10 + 10 + 221 = 666.

It is not a de Polignac number, because 211222101010221 - 2¹⁴ = 211222100993837 is a prime.

It is a super-2 number, since 2×211222101010221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222101010194 and 211222101010203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222101210221) 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 47 ways as a sum of consecutive naturals, for example, 877955896 + ... + 878196446.

It is an arithmetic number, because the mean of its divisors is an integer number (7289228353680).

Almost surely, 2^{211222101010221} is an apocalyptic number.

211222101010221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211222101010221 is a deficient number, since it is larger than the sum of its proper divisors (138660859966419).

211222101010221 is a wasteful number, since it uses less digits than its factorization.

211222101010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288426 (or 288423 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211222101010221 its reverse (122010101222112), we get a palindrome (333232202232333).

The spelling of 211222101010221 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred one million, ten thousand, two hundred twenty-one".