2210212221021 has 24 divisors (see below), whose sum is σ = 3747215232384. Its totient is φ = 1228843859040.

The previous prime is 2210212220939. The next prime is 2210212221043. The reversal of 2210212221021 is 1201222120122.

It is a happy number.

2210212221021 is a `hidden beast` number, since 2 + 210 + 212 + 221 + 0 + 21 = 666.

It is not a de Polignac number, because 2210212221021 - 2³⁴ = 2193032351837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210212220985 and 2210212221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210212221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474088665 + ... + 474093326.

It is an arithmetic number, because the mean of its divisors is an integer number (156133968016).

Almost surely, 2^{2210212221021} is an apocalyptic number.

2210212221021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2210212221021 is a deficient number, since it is larger than the sum of its proper divisors (1537003011363).

2210212221021 is a wasteful number, since it uses less digits than its factorization.

2210212221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948182041 (or 948182038 counting only the distinct ones).

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

Adding to 2210212221021 its reverse (1201222120122), we get a palindrome (3411434341143).

The spelling of 2210212221021 in words is "two trillion, two hundred ten billion, two hundred twelve million, two hundred twenty-one thousand, twenty-one".