212021322311 has 4 divisors (see below), whose sum is σ = 212093761632. Its totient is φ = 211948882992.

The previous prime is 212021322239. The next prime is 212021322397. The reversal of 212021322311 is 113223120212.

212021322311 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 a de Polignac number, because none of the positive numbers 2^k-212021322311 is a prime.

It is a super-2 number, since 2×212021322311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021322811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36215270 + ... + 36221123.

It is an arithmetic number, because the mean of its divisors is an integer number (53023440408).

Almost surely, 2^212021322311 is an apocalyptic number.

212021322311 is a deficient number, since it is larger than the sum of its proper divisors (72439321).

212021322311 is an equidigital number, since it uses as much as digits as its factorization.

212021322311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72439320.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212021322311 its reverse (113223120212), we get a palindrome (325244442523).

The spelling of 212021322311 in words is "two hundred twelve billion, twenty-one million, three hundred twenty-two thousand, three hundred eleven".