212012121021211 has 16 divisors (see below), whose sum is σ = 242374862758336. Its totient is φ = 181668206025216.

The previous prime is 212012121021167. The next prime is 212012121021271. The reversal of 212012121021211 is 112120121210212.

It is a happy number.

212012121021211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212012121021211 - 2⁹ = 212012121020699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212012121021271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181056015 + ... + 1181235511.

It is an arithmetic number, because the mean of its divisors is an integer number (15148428922396).

Almost surely, 2^{212012121021211} is an apocalyptic number.

212012121021211 is a deficient number, since it is larger than the sum of its proper divisors (30362741737125).

212012121021211 is a wasteful number, since it uses less digits than its factorization.

212012121021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230998.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212012121021211 its reverse (112120121210212), we get a palindrome (324132242231423).

It can be divided in two parts, 2120121210212 and 11, that multiplied together give a palindrome (23321333312332).

The spelling of 212012121021211 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred eleven".