2111102112220 has 48 divisors (see below), whose sum is σ = 4574116562400. Its totient is φ = 817917742080.

The previous prime is 2111102112187. The next prime is 2111102112277. The reversal of 2111102112220 is 222112011112.

It is a junction number, because it is equal to n+sod(n) for n = 2111102112194 and 2111102112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9146865 + ... + 9374824.

It is an arithmetic number, because the mean of its divisors is an integer number (95294095050).

Almost surely, 2^{2111102112220} is an apocalyptic number.

2111102112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111102112220 is an abundant number, since it is smaller than the sum of its proper divisors (2463014450180).

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

2111102112220 is a wasteful number, since it uses less digits than its factorization.

2111102112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18521878 (or 18521876 counting only the distinct ones).

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

Adding to 2111102112220 its reverse (222112011112), we get a palindrome (2333214123332).

The spelling of 2111102112220 in words is "two trillion, one hundred eleven billion, one hundred two million, one hundred twelve thousand, two hundred twenty".