212221211011 has 8 divisors (see below), whose sum is σ = 215404380000. Its totient is φ = 209043434880.

The previous prime is 212221210973. The next prime is 212221211023. The reversal of 212221211011 is 110112122212.

212221211011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212221211011 - 2²³ = 212212822403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221211051) 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 7 ways as a sum of consecutive naturals, for example, 1268886 + ... + 1426363.

It is an arithmetic number, because the mean of its divisors is an integer number (26925547500).

Almost surely, 2^212221211011 is an apocalyptic number.

212221211011 is a deficient number, since it is larger than the sum of its proper divisors (3183168989).

212221211011 is a wasteful number, since it uses less digits than its factorization.

212221211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696429.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212221211011 its reverse (110112122212), we get a palindrome (322333333223).

It can be divided in two parts, 2122212 and 11011, that multiplied together give a palindrome (23367676332).

The spelling of 212221211011 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred eleven thousand, eleven".