212101010121211 has 8 divisors (see below), whose sum is σ = 212122020934224. Its totient is φ = 212079999882240.

The previous prime is 212101010121197. The next prime is 212101010121223. The reversal of 212101010121211 is 112121010101212.

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 212101010121211 - 2²³ = 212101001732603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101010121281) 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, 1232364315 + ... + 1232536411.

It is an arithmetic number, because the mean of its divisors is an integer number (26515252616778).

Almost surely, 2^{212101010121211} is an apocalyptic number.

212101010121211 is a deficient number, since it is larger than the sum of its proper divisors (21010813013).

212101010121211 is a wasteful number, since it uses less digits than its factorization.

212101010121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287021.

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

Adding to 212101010121211 its reverse (112121010101212), we get a palindrome (324222020222423).

It can be divided in two parts, 2121010101212 and 11, that multiplied together give a palindrome (23331111113332).

The spelling of 212101010121211 in words is "two hundred twelve trillion, one hundred one billion, ten million, one hundred twenty-one thousand, two hundred eleven".