211222120011 has 16 divisors (see below), whose sum is σ = 321879360000. Its totient is φ = 120691948608.

The previous prime is 211222120009. The next prime is 211222120033. The reversal of 211222120011 is 110021222112.

211222120011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211222120011 - 2¹ = 211222120009 is a prime.

It is a super-2 number, since 2×211222120011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222120411) 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 15 ways as a sum of consecutive naturals, for example, 153615 + ... + 667863.

It is an arithmetic number, because the mean of its divisors is an integer number (20117460000).

Almost surely, 2^211222120011 is an apocalyptic number.

211222120011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211222120011 is a deficient number, since it is larger than the sum of its proper divisors (110657239989).

211222120011 is a wasteful number, since it uses less digits than its factorization.

211222120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533818.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211222120011 its reverse (110021222112), we get a palindrome (321243342123).

The spelling of 211222120011 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, eleven".