2120111310 has 64 divisors (see below), whose sum is σ = 5478969600. Its totient is φ = 523080192.

The previous prime is 2120111309. The next prime is 2120111321. The reversal of 2120111310 is 131110212.

It is a super-2 number, since 2×2120111310² = 8989743933579832200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5140 + ... + 65319.

It is an arithmetic number, because the mean of its divisors is an integer number (85608900).

Almost surely, 2^2120111310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120111310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2739484800).

2120111310 is an abundant number, since it is smaller than the sum of its proper divisors (3358858290).

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

2120111310 is a wasteful number, since it uses less digits than its factorization.

2120111310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70545.

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

The square root of 2120111310 is about 46044.6664663781. Note that the first 3 decimals coincide. The cubic root of 2120111310 is about 1284.6541403929.

Adding to 2120111310 its reverse (131110212), we get a palindrome (2251221522).

The spelling of 2120111310 in words is "two billion, one hundred twenty million, one hundred eleven thousand, three hundred ten".