201103311220 has 48 divisors (see below), whose sum is σ = 484719475968. Its totient is φ = 68653774080.

The previous prime is 201103311203. The next prime is 201103311229. The reversal of 201103311220 is 22113301102.

It is a junction number, because it is equal to n+sod(n) for n = 201103311194 and 201103311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201103311229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3049896 + ... + 3115135.

It is an arithmetic number, because the mean of its divisors is an integer number (10098322416).

Almost surely, 2^201103311220 is an apocalyptic number.

201103311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201103311220 is an abundant number, since it is smaller than the sum of its proper divisors (283616164748).

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

201103311220 is a wasteful number, since it uses less digits than its factorization.

201103311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165280 (or 6165278 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 201103311220 its reverse (22113301102), we get a palindrome (223216612322).

The spelling of 201103311220 in words is "two hundred one billion, one hundred three million, three hundred eleven thousand, two hundred twenty".