201231222220 has 48 divisors (see below), whose sum is σ = 482992570368. Its totient is φ = 68988185280.

The previous prime is 201231222217. The next prime is 201231222289. The reversal of 201231222220 is 22222132102.

201231222220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2021005 + ... + 2118235.

It is an arithmetic number, because the mean of its divisors is an integer number (10062345216).

Almost surely, 2^201231222220 is an apocalyptic number.

201231222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231222220 is an abundant number, since it is smaller than the sum of its proper divisors (281761348148).

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

201231222220 is a wasteful number, since it uses less digits than its factorization.

201231222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112030 (or 112028 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 201231222220 its reverse (22222132102), we get a palindrome (223453354322).

The spelling of 201231222220 in words is "two hundred one billion, two hundred thirty-one million, two hundred twenty-two thousand, two hundred twenty".