212012120200221 has 12 divisors (see below), whose sum is σ = 334079704558080. Its totient is φ = 128492194060680.

The previous prime is 212012120200211. The next prime is 212012120200229. The reversal of 212012120200221 is 122002021210212.

It is a happy number.

212012120200221 is a `hidden beast` number, since 2 + 1 + 201 + 21 + 20 + 200 + 221 = 666.

It is not a de Polignac number, because 212012120200221 - 2⁷ = 212012120200093 is a prime.

It is a super-2 number, since 2×212012120200221² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212012120200194 and 212012120200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012120200229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1070768283741 + ... + 1070768283938.

It is an arithmetic number, because the mean of its divisors is an integer number (27839975379840).

Almost surely, 2^{212012120200221} is an apocalyptic number.

It is an amenable number.

212012120200221 is a deficient number, since it is larger than the sum of its proper divisors (122067584357859).

212012120200221 is a wasteful number, since it uses less digits than its factorization.

212012120200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141536567696 (or 2141536567693 counting only the distinct ones).

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

Adding to 212012120200221 its reverse (122002021210212), we get a palindrome (334014141410433).

The spelling of 212012120200221 in words is "two hundred twelve trillion, twelve billion, one hundred twenty million, two hundred thousand, two hundred twenty-one".