201111122010220 has 24 divisors (see below), whose sum is σ = 422814922228944. Its totient is φ = 80352721945536.

The previous prime is 201111122010137. The next prime is 201111122010229. The reversal of 201111122010220 is 22010221111102.

It is a junction number, because it is equal to n+sod(n) for n = 201111122010194 and 201111122010203.

It is not an unprimeable number, because it can be changed into a prime (201111122010229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5732910682 + ... + 5732945761.

It is an arithmetic number, because the mean of its divisors is an integer number (17617288426206).

Almost surely, 2^{201111122010220} is an apocalyptic number.

201111122010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111122010220 is an abundant number, since it is smaller than the sum of its proper divisors (221703800218724).

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

201111122010220 is a wasteful number, since it uses less digits than its factorization.

201111122010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465857329 (or 11465857327 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201111122010220 its reverse (22010221111102), we get a palindrome (223121343121322).

The spelling of 201111122010220 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-two million, ten thousand, two hundred twenty".