212021000222221 has 8 divisors (see below), whose sum is σ = 212789075466240. Its totient is φ = 211254300226512.

The previous prime is 212021000222189. The next prime is 212021000222231. The reversal of 212021000222221 is 122222000120212.

212021000222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 212021000222221 - 2⁵ = 212021000222189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021000222231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343503181 + ... + 344119858.

It is an arithmetic number, because the mean of its divisors is an integer number (26598634433280).

Almost surely, 2^{212021000222221} is an apocalyptic number.

It is an amenable number.

212021000222221 is a deficient number, since it is larger than the sum of its proper divisors (768075244019).

212021000222221 is an equidigital number, since it uses as much as digits as its factorization.

212021000222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687624155.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212021000222221 its reverse (122222000120212), we get a palindrome (334243000342433).

The spelling of 212021000222221 in words is "two hundred twelve trillion, twenty-one billion, two hundred twenty-two thousand, two hundred twenty-one".