212212020021 has 8 divisors (see below), whose sum is σ = 282971741184. Its totient is φ = 141463489440.

The previous prime is 212212019993. The next prime is 212212020079. The reversal of 212212020021 is 120020212212.

212212020021 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 not a de Polignac number, because 212212020021 - 2¹¹ = 212212017973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212020521) 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, 2753296 + ... + 2829321.

It is an arithmetic number, because the mean of its divisors is an integer number (35371467648).

Almost surely, 2^212212020021 is an apocalyptic number.

It is an amenable number.

212212020021 is a deficient number, since it is larger than the sum of its proper divisors (70759721163).

212212020021 is a wasteful number, since it uses less digits than its factorization.

212212020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595291.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212212020021 its reverse (120020212212), we get a palindrome (332232232233).

The spelling of 212212020021 in words is "two hundred twelve billion, two hundred twelve million, twenty thousand, twenty-one".