212120020111211 has 4 divisors (see below), whose sum is σ = 212197691304024. Its totient is φ = 212042348918400.

The previous prime is 212120020111193. The next prime is 212120020111243. The reversal of 212120020111211 is 112111020021212.

212120020111211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212120020111211 - 2⁴² = 207721973600107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212120020111211.

It is not an unprimeable number, because it can be changed into a prime (212120020111261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38835592310 + ... + 38835597771.

It is an arithmetic number, because the mean of its divisors is an integer number (53049422826006).

Almost surely, 2^{212120020111211} is an apocalyptic number.

212120020111211 is a deficient number, since it is larger than the sum of its proper divisors (77671192813).

212120020111211 is an equidigital number, since it uses as much as digits as its factorization.

212120020111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77671192812.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212120020111211 its reverse (112111020021212), we get a palindrome (324231040132423).

The spelling of 212120020111211 in words is "two hundred twelve trillion, one hundred twenty billion, twenty million, one hundred eleven thousand, two hundred eleven".