212200021221211 has 4 divisors (see below), whose sum is σ = 224682375410712. Its totient is φ = 199717667031712.

The previous prime is 212200021221193. The next prime is 212200021221263. The reversal of 212200021221211 is 112122120002212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212200021221211 - 2¹⁵ = 212200021188443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212200021221611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6241177094725 + ... + 6241177094758.

It is an arithmetic number, because the mean of its divisors is an integer number (56170593852678).

Almost surely, 2^{212200021221211} is an apocalyptic number.

212200021221211 is a deficient number, since it is larger than the sum of its proper divisors (12482354189501).

212200021221211 is a wasteful number, since it uses less digits than its factorization.

212200021221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12482354189500.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212200021221211 its reverse (112122120002212), we get a palindrome (324322141223423).

The spelling of 212200021221211 in words is "two hundred twelve trillion, two hundred billion, twenty-one million, two hundred twenty-one thousand, two hundred eleven".