201221222222211 has 16 divisors (see below), whose sum is σ = 268364814769920. Its totient is φ = 134112557204640.

The previous prime is 201221222222191. The next prime is 201221222222239. The reversal of 201221222222211 is 112222222122102.

It is a happy number.

201221222222211 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 201221222222211 - 2⁵ = 201221222222179 is a prime.

It is a super-3 number, since 3×201221222222211³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (201221222222011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561152706 + ... + 561511176.

It is an arithmetic number, because the mean of its divisors is an integer number (16772800923120).

Almost surely, 2^{201221222222211} is an apocalyptic number.

201221222222211 is a deficient number, since it is larger than the sum of its proper divisors (67143592547709).

201221222222211 is a wasteful number, since it uses less digits than its factorization.

201221222222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406666.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 201221222222211 its reverse (112222222122102), we get a palindrome (313443444344313).

The spelling of 201221222222211 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".