210211022200221 has 30 divisors (see below), whose sum is σ = 365287331857470. Its totient is φ = 120120584112144.

The previous prime is 210211022200219. The next prime is 210211022200243. The reversal of 210211022200221 is 122002220112012.

It is a happy number.

210211022200221 is a `hidden beast` number, since 2 + 10 + 211 + 0 + 2 + 220 + 0 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 202098608067321 + 8112414132900 = 14216139^2 + 2848230^2 .

It is not a de Polignac number, because 210211022200221 - 2¹ = 210211022200219 is a prime.

It is a super-2 number, since 2×210211022200221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210211022200194 and 210211022200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211022200261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 26481606286 + ... + 26481614223.

It is an arithmetic number, because the mean of its divisors is an integer number (12176244395249).

Almost surely, 2^{210211022200221} is an apocalyptic number.

210211022200221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210211022200221 is a deficient number, since it is larger than the sum of its proper divisors (155076309657249).

210211022200221 is an equidigital number, since it uses as much as digits as its factorization.

210211022200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52963220535 (or 52963220519 counting only the distinct ones).

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

Adding to 210211022200221 its reverse (122002220112012), we get a palindrome (332213242312233).

The spelling of 210211022200221 in words is "two hundred ten trillion, two hundred eleven billion, twenty-two million, two hundred thousand, two hundred twenty-one".