2111011320 has 128 divisors (see below), whose sum is σ = 7095651840. Its totient is φ = 497917440.

The previous prime is 2111011319. The next prime is 2111011337. The reversal of 2111011320 is 231101112.

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 = 2111011296 and 2111011305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27229 + ... + 70451.

It is an arithmetic number, because the mean of its divisors is an integer number (55434780).

Almost surely, 2^2111011320 is an apocalyptic number.

2111011320 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 2111011320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3547825920).

2111011320 is an abundant number, since it is smaller than the sum of its proper divisors (4984640520).

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

2111011320 is a wasteful number, since it uses less digits than its factorization.

2111011320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43285 (or 43281 counting only the distinct ones).

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

The square root of 2111011320 is about 45945.7432195846. The cubic root of 2111011320 is about 1282.8134971490.

Adding to 2111011320 its reverse (231101112), we get a palindrome (2342112432).

The spelling of 2111011320 in words is "two billion, one hundred eleven million, eleven thousand, three hundred twenty".