201211222222011 has 16 divisors (see below), whose sum is σ = 268545030717600. Its totient is φ = 134009121561600.

The previous prime is 201211222221991. The next prime is 201211222222037. The reversal of 201211222222011 is 110222222112102.

It is not a de Polignac number, because 201211222222011 - 2⁷ = 201211222221883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201211222222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111772791 + ... + 113558703.

It is an arithmetic number, because the mean of its divisors is an integer number (16784064419850).

Almost surely, 2^{201211222222011} is an apocalyptic number.

201211222222011 is a deficient number, since it is larger than the sum of its proper divisors (67333808495589).

201211222222011 is a wasteful number, since it uses less digits than its factorization.

201211222222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822766.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201211222222011 its reverse (110222222112102), we get a palindrome (311433444334113).

The spelling of 201211222222011 in words is "two hundred one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, eleven".