20111101110220 has 96 divisors (see below), whose sum is σ = 46261740470400. Its totient is φ = 7309824528384.

The previous prime is 20111101110209. The next prime is 20111101110227. The reversal of 20111101110220 is 2201110111102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20111101110220.

It is not an unprimeable number, because it can be changed into a prime (20111101110227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337014546 + ... + 337074214.

It is an arithmetic number, because the mean of its divisors is an integer number (481893129900).

Almost surely, 2^{20111101110220} is an apocalyptic number.

20111101110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111101110220 is an abundant number, since it is smaller than the sum of its proper divisors (26150639360180).

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

20111101110220 is a wasteful number, since it uses less digits than its factorization.

20111101110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93907 (or 93905 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20111101110220 its reverse (2201110111102), we get a palindrome (22312211221322).

The spelling of 20111101110220 in words is "twenty trillion, one hundred eleven billion, one hundred one million, one hundred ten thousand, two hundred twenty".