212220111011 has 4 divisors (see below), whose sum is σ = 212224512024. Its totient is φ = 212215710000.

The previous prime is 212220110959. The next prime is 212220111041. The reversal of 212220111011 is 110111022212.

212220111011 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 not a de Polignac number, because 212220111011 - 2¹⁴ = 212220094627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212220111041) 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, 2127365 + ... + 2224886.

It is an arithmetic number, because the mean of its divisors is an integer number (53056128006).

Almost surely, 2^212220111011 is an apocalyptic number.

212220111011 is a deficient number, since it is larger than the sum of its proper divisors (4401013).

212220111011 is an equidigital number, since it uses as much as digits as its factorization.

212220111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401012.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212220111011 its reverse (110111022212), we get a palindrome (322331133223).

The spelling of 212220111011 in words is "two hundred twelve billion, two hundred twenty million, one hundred eleven thousand, eleven".