212220122011 has 4 divisors (see below), whose sum is σ = 212265540792. Its totient is φ = 212174703232.

The previous prime is 212220121999. The next prime is 212220122053. The reversal of 212220122011 is 110221022212.

It is a happy number.

212220122011 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 212220122011 - 2²³ = 212211733403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212220122911) 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, 22702381 + ... + 22711726.

It is an arithmetic number, because the mean of its divisors is an integer number (53066385198).

Almost surely, 2^212220122011 is an apocalyptic number.

212220122011 is a deficient number, since it is larger than the sum of its proper divisors (45418781).

212220122011 is an equidigital number, since it uses as much as digits as its factorization.

212220122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45418780.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212220122011 its reverse (110221022212), we get a palindrome (322441144223).

The spelling of 212220122011 in words is "two hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, eleven".