212122221133 has 4 divisors (see below), whose sum is σ = 212295666528. Its totient is φ = 211948775740.

The previous prime is 212122221089. The next prime is 212122221149. The reversal of 212122221133 is 331122221212.

212122221133 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212122221133 - 2⁹ = 212122220621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122221163) 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, 86720863 + ... + 86723308.

It is an arithmetic number, because the mean of its divisors is an integer number (53073916632).

Almost surely, 2^212122221133 is an apocalyptic number.

It is an amenable number.

212122221133 is a deficient number, since it is larger than the sum of its proper divisors (173445395).

212122221133 is a wasteful number, since it uses less digits than its factorization.

212122221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173445394.

The product of its digits is 576, while the sum is 22.

Adding to 212122221133 its reverse (331122221212), we get a palindrome (543244442345).

The spelling of 212122221133 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred thirty-three".