212121222100211 has 8 divisors (see below), whose sum is σ = 212159620375920. Its totient is φ = 212082825231648.

The previous prime is 212121222100199. The next prime is 212121222100273. The reversal of 212121222100211 is 112001222121212.

212121222100211 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 212121222100211 - 2⁶ = 212121222100147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212121222102211) 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, 328799420 + ... + 329443926.

It is an arithmetic number, because the mean of its divisors is an integer number (26519952546990).

Almost surely, 2^{212121222100211} is an apocalyptic number.

212121222100211 is a deficient number, since it is larger than the sum of its proper divisors (38398275709).

212121222100211 is an equidigital number, since it uses as much as digits as its factorization.

212121222100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703573.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212121222100211 its reverse (112001222121212), we get a palindrome (324122444221423).

The spelling of 212121222100211 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred eleven".