212221101011 has 2 divisors, whose sum is σ = 212221101012. Its totient is φ = 212221101010.

The previous prime is 212221100983. The next prime is 212221101019. The reversal of 212221101011 is 110101122212.

212221101011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212221101011 is a prime.

It is not a weakly prime, because it can be changed into another prime (212221101019) 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 as a sum of consecutive naturals, namely, 106110550505 + 106110550506.

It is an arithmetic number, because the mean of its divisors is an integer number (106110550506).

Almost surely, 2^212221101011 is an apocalyptic number.

212221101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221101011 is an equidigital number, since it uses as much as digits as its factorization.

212221101011 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212221101011 its reverse (110101122212), we get a palindrome (322322223223).

The spelling of 212221101011 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred one thousand, eleven".