201112220201220 has 72 divisors (see below), whose sum is σ = 612308209607640. Its totient is φ = 53430557621760.

The previous prime is 201112220201183. The next prime is 201112220201227. The reversal of 201112220201220 is 22102022211102.

It is a happy number.

201112220201220 is a `hidden beast` number, since 2 + 0 + 11 + 12 + 220 + 201 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11933487342144 + 189178732859076 = 3454488^2 + 13754226^2 .

It is a super-2 number, since 2×201112220201220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201112220201193 and 201112220201202.

It is not an unprimeable number, because it can be changed into a prime (201112220201227) 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 23 ways as a sum of consecutive naturals, for example, 2076699001 + ... + 2076795840.

It is an arithmetic number, because the mean of its divisors is an integer number (8504280688995).

Almost surely, 2^{201112220201220} is an apocalyptic number.

201112220201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201112220201220 is an abundant number, since it is smaller than the sum of its proper divisors (411195989406420).

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

201112220201220 is a wasteful number, since it uses less digits than its factorization.

201112220201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153495125 (or 4153495120 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201112220201220 its reverse (22102022211102), we get a palindrome (223214242412322).

The spelling of 201112220201220 in words is "two hundred one trillion, one hundred twelve billion, two hundred twenty million, two hundred one thousand, two hundred twenty".