220000212021 has 16 divisors (see below), whose sum is σ = 298955733120. Its totient is φ = 143882395200.

The previous prime is 220000212017. The next prime is 220000212037. The reversal of 220000212021 is 120212000022.

It is not a de Polignac number, because 220000212021 - 2² = 220000212017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220000211988 and 220000212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000212011) 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 15 ways as a sum of consecutive naturals, for example, 3297585 + ... + 3363638.

It is an arithmetic number, because the mean of its divisors is an integer number (18684733320).

Almost surely, 2^220000212021 is an apocalyptic number.

It is an amenable number.

220000212021 is a deficient number, since it is larger than the sum of its proper divisors (78955521099).

220000212021 is a wasteful number, since it uses less digits than its factorization.

220000212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661436.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 220000212021 its reverse (120212000022), we get a palindrome (340212212043).

The spelling of 220000212021 in words is "two hundred twenty billion, two hundred twelve thousand, twenty-one".