220210222021 has 4 divisors (see below), whose sum is σ = 220216868044. Its totient is φ = 220203576000.

The previous prime is 220210222009. The next prime is 220210222039. The reversal of 220210222021 is 120222012022.

220210222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105228872100 + 114981349921 = 324390^2 + 339089^2 .

It is a cyclic number.

It is not a de Polignac number, because 220210222021 - 2⁵ = 220210221989 is a prime.

It is a super-2 number, since 2×220210222021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220210221986 and 220210222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220210222621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3273060 + ... + 3339661.

It is an arithmetic number, because the mean of its divisors is an integer number (55054217011).

Almost surely, 2^220210222021 is an apocalyptic number.

It is an amenable number.

220210222021 is a deficient number, since it is larger than the sum of its proper divisors (6646023).

220210222021 is an equidigital number, since it uses as much as digits as its factorization.

220210222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6646022.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220210222021 its reverse (120222012022), we get a palindrome (340432234043).

The spelling of 220210222021 in words is "two hundred twenty billion, two hundred ten million, two hundred twenty-two thousand, twenty-one".