201211122102222 has 64 divisors (see below), whose sum is σ = 406958938214400. Its totient is φ = 66318886677120.

The previous prime is 201211122102173. The next prime is 201211122102227. The reversal of 201211122102222 is 222201221112102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211122102227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368084179 + ... + 368630417.

It is an arithmetic number, because the mean of its divisors is an integer number (6358733409600).

Almost surely, 2^{201211122102222} is an apocalyptic number.

201211122102222 is an abundant number, since it is smaller than the sum of its proper divisors (205747816112178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201211122102222 is a wasteful number, since it uses less digits than its factorization.

201211122102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548361.

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

Adding to 201211122102222 its reverse (222201221112102), we get a palindrome (423412343214324).

The spelling of 201211122102222 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred two thousand, two hundred twenty-two".