220000222021 has 8 divisors (see below), whose sum is σ = 220653889400. Its totient is φ = 219346688448.

The previous prime is 220000222009. The next prime is 220000222087. The reversal of 220000222021 is 120222000022.

220000222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 96029332996 + 123970889025 = 309886^2 + 352095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220000222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220000221992 and 220000222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000225021) 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 7 ways as a sum of consecutive naturals, for example, 3963955 + ... + 4019071.

It is an arithmetic number, because the mean of its divisors is an integer number (27581736175).

Almost surely, 2^220000222021 is an apocalyptic number.

It is an amenable number.

220000222021 is a deficient number, since it is larger than the sum of its proper divisors (653667379).

220000222021 is a wasteful number, since it uses less digits than its factorization.

220000222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66903.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 220000222021 its reverse (120222000022), we get a palindrome (340222222043).

The spelling of 220000222021 in words is "two hundred twenty billion, two hundred twenty-two thousand, twenty-one".