212000122012021 has 16 divisors (see below), whose sum is σ = 250104680455168. Its totient is φ = 175850418096000.

The previous prime is 212000122012009. The next prime is 212000122012069. The reversal of 212000122012021 is 120210221000212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212000122012021 - 2⁷ = 212000122011893 is a prime.

It is a super-3 number, since 3×212000122012021³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 212000122011986 and 212000122012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000122012121) 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 15 ways as a sum of consecutive naturals, for example, 11199121 + ... + 23439721.

It is an arithmetic number, because the mean of its divisors is an integer number (15631542528448).

Almost surely, 2^{212000122012021} is an apocalyptic number.

It is an amenable number.

212000122012021 is a deficient number, since it is larger than the sum of its proper divisors (38104558443147).

212000122012021 is a wasteful number, since it uses less digits than its factorization.

212000122012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320452.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212000122012021 its reverse (120210221000212), we get a palindrome (332210343012233).

The spelling of 212000122012021 in words is "two hundred twelve trillion, one hundred twenty-two million, twelve thousand, twenty-one".