201111112220 has 48 divisors (see below), whose sum is σ = 445734710400. Its totient is φ = 76009389120.

The previous prime is 201111112193. The next prime is 201111112229. The reversal of 201111112220 is 22211111102.

It is a junction number, because it is equal to n+sod(n) for n = 201111112195 and 201111112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111112229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554186 + ... + 842225.

It is an arithmetic number, because the mean of its divisors is an integer number (9286139800).

Almost surely, 2^201111112220 is an apocalyptic number.

201111112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111112220 is an abundant number, since it is smaller than the sum of its proper divisors (244623598180).

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

201111112220 is a wasteful number, since it uses less digits than its factorization.

201111112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396818 (or 1396816 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201111112220 its reverse (22211111102), we get a palindrome (223322223322).

The spelling of 201111112220 in words is "two hundred one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty".