2111000111220 has 384 divisors, whose sum is σ = 8150679355392. Its totient is φ = 393963264000.

The previous prime is 2111000111219. The next prime is 2111000111263. The reversal of 2111000111220 is 221110001112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2111000111196 and 2111000111205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1747245 + ... + 2697195.

It is an arithmetic number, because the mean of its divisors is an integer number (21225727488).

Almost surely, 2^{2111000111220} is an apocalyptic number.

2111000111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111000111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4075339677696).

2111000111220 is an abundant number, since it is smaller than the sum of its proper divisors (6039679244172).

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

2111000111220 is a wasteful number, since it uses less digits than its factorization.

2111000111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950031 (or 950029 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2111000111220 its reverse (221110001112), we get a palindrome (2332110112332).

The spelling of 2111000111220 in words is "two trillion, one hundred eleven billion, one hundred eleven thousand, two hundred twenty".