212022221111 has 8 divisors (see below), whose sum is σ = 223185823920. Its totient is φ = 200859072192.

The previous prime is 212022221041. The next prime is 212022221119. The reversal of 212022221111 is 111122220212.

212022221111 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 212022221111 - 2²⁶ = 211955112247 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 212022221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022221119) 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, 1291571 + ... + 1446443.

It is an arithmetic number, because the mean of its divisors is an integer number (27898227990).

Almost surely, 2^212022221111 is an apocalyptic number.

212022221111 is a deficient number, since it is larger than the sum of its proper divisors (11163602809).

212022221111 is a wasteful number, since it uses less digits than its factorization.

212022221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226945.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212022221111 its reverse (111122220212), we get a palindrome (323144441323).

The spelling of 212022221111 in words is "two hundred twelve billion, twenty-two million, two hundred twenty-one thousand, one hundred eleven".