212020002112221 has 16 divisors (see below), whose sum is σ = 314221041160000. Its totient is φ = 141293867627664.

The previous prime is 212020002112187. The next prime is 212020002112241. The reversal of 212020002112221 is 122211200020212.

It is a happy number.

212020002112221 is a `hidden beast` number, since 212 + 0 + 20 + 0 + 0 + 211 + 2 + 221 = 666.

It is not a de Polignac number, because 212020002112221 - 2¹⁸ = 212020001850077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020002112194 and 212020002112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020002112241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1466605471 + ... + 1466750028.

It is an arithmetic number, because the mean of its divisors is an integer number (19638815072500).

Almost surely, 2^{212020002112221} is an apocalyptic number.

It is an amenable number.

212020002112221 is a deficient number, since it is larger than the sum of its proper divisors (102201039047779).

212020002112221 is a wasteful number, since it uses less digits than its factorization.

212020002112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933358185 (or 2933358179 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212020002112221 its reverse (122211200020212), we get a palindrome (334231202132433).

The spelling of 212020002112221 in words is "two hundred twelve trillion, twenty billion, two million, one hundred twelve thousand, two hundred twenty-one".