201211323110220 has 48 divisors (see below), whose sum is σ = 593043899696640. Its totient is φ = 50832334259136.

The previous prime is 201211323110219. The next prime is 201211323110267. The reversal of 201211323110220 is 22011323112102.

It is an unprimeable number.

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, 88250579172 + ... + 88250581451.

It is an arithmetic number, because the mean of its divisors is an integer number (12355081243680).

Almost surely, 2^{201211323110220} is an apocalyptic number.

201211323110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211323110220 is an abundant number, since it is smaller than the sum of its proper divisors (391832576586420).

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

201211323110220 is a wasteful number, since it uses less digits than its factorization.

201211323110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176501160654 (or 176501160652 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201211323110220 its reverse (22011323112102), we get a palindrome (223222646222322).

The spelling of 201211323110220 in words is "two hundred one trillion, two hundred eleven billion, three hundred twenty-three million, one hundred ten thousand, two hundred twenty".